Showing 1 – 41 of 41 results.
Curated
National Health Interview Survey, 1984 (ICPSR 8659)
Released/updated on: 2011-04-19
Geographic coverage: United States
The basic purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. There are five types of records in this core survey, each in a separate data file. The variables in the Household File (Part 1) include type of living quarters, size of family, region, and type of sampling area. The Person File (Part 2) includes sex, age, race, marital status, veteran status, and education. These variables are found in the Condition, Doctor Visit, and Hospital Episode Files as well. The Person File also supplies data on height, weight, bed days, doctor visits, hospital stays, years at residence, and region variables. The Condition (Part 3), Doctor Visit (Part 4), and Hospital Episode (Part 5) Files contain information on each reported acute or chronic condition, doctor visit, or hospitalization, respectively. A sixth, seventh, and eighth file have been provided. The Health Insurance Supplement File (Part6) contains information on the type of health insurance held by each respondent from the Person file. Parts 7-8 comprise the Supplement on Aging (SOA) Files divided into Condition and Person Public Use Files respectively, and contain data on a subset of the NHIS population, those aged 55 and over. These files contain the same Condition and Person variables as Parts 2-3 but are supplemented by questions pertaining specifically to the subpopulation of older respondents. These additional variables cover family relationships and support, community and social support, occupation and retirement, nursing home stays, help with care, health opinions, and other health-related and social information about middle-aged and older people.
Curated
National Health Interview Survey, 1985 (ICPSR 8668)
Released/updated on: 2011-05-25
Geographic coverage: United States
The basic purpose of the National Health Interview Survey is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. There are five types of records in the core survey, each in a separate data file. The variables in the Household File (Part 1) include type of living quarters, size of family, number of families in household, and geographic region. The variables in the Person File (Part 2) include sex, age, race, marital status, veteran status, education, income, industry and occupation codes, and limits on activity. These variables are found in the Condition, Doctor Visit, and Hospital Episode Files as well. The Person File also supplies data on height, weight, bed days, doctor visits, hospital stays, years at residence, and region variables. The Condition (Part 3), Doctor Visit (Part 4), and the Hospital Episode (Part 5) Files contain information on each reported condition, two-week doctor visit, or hospitalization (twelve-month recall), respectively. A sixth, seventh, and eighth file have been added along with the five core files. The Health Promotions and Disease Prevention Supplement is separated into three categories as follows: Child Safety/Infant Feeding (Part 6), Sample Person (Part 7), and Smoking (Part 8). These data files include questions on health and fitness awareness, general health habits, injury control, child safety and health, high blood pressure, stress, exercise, smoking, alcohol use, dental care, and occupational safety and health.
Curated
National Health Interview Survey, 1986: Multiple Cause of Death, Dates of Death, 1986-1991 (ICPSR 6475)
Released/updated on: 1995-06-05
Geographic coverage: United States
Time period: 1986-01-01--1991-01-01
This data file supplies the date and cause of death for sample persons included in the NATIONAL HEALTH INTERVIEW SURVEY, 1986 (ICPSR 8976) who died between 1986 and the end of 1991. Linkage information collected on respondents 18 years of age and older as part of the National Health Interview Survey (NHIS) was used to match these respondents to the National Death Index. The vital status information produced from the matches can be linked with the NHIS data to provide a longitudinal component to those data. Variables include survey year, quarter, household number, person number, year of death, month of death, whether an autopsy was performed, vital status classification information, causes of death, and hospital and patient status.
Curated
National Health Interview Survey, 1987: Adoption Supplement (ICPSR 9342)
Released/updated on: 1992-02-17
Geographic coverage: United States
In 1987, the National Health Interview Survey (NHIS) questionnaire included a special section that queried female respondents aged 20 through 54 about adoption. Their responses to the supplement are recorded in this dataset, along with other information about them derived from the core 1987 questionnaire. The special section on adoption asked if any children had ever been adopted, the number that were adopted, and whether these children currently lived in the household. Additional questions in the supplement inquired about the two most recent adoptions: how the adoptions were arranged, the adoptive mother's relationship to the adopted children before adoption, when and how old the adopted children were when they began living with the adoptive mother, the date of birth of the adopted children, and whether the adopted children were born in the United States. Variables from the core questionnaire include height, weight, age, race, Hispanic origin, type of living quarters, region and metropolitan status of residence, marital status, veteran status, education, family income, health status, industry, occupation, activity limitation status, medical conditions, restricted activity days in the past two weeks, bed days in the past two weeks and past 12 months, time interval since the last doctor visit, and the number of doctor visits and short-stay hospital episodes in the past two months.
Curated
National Health Interview Survey, 1987: Cancer Control Study (ICPSR 9343)
Released/updated on: 1992-02-17
Geographic coverage: United States
In 1987, a supplementary Cancer Control Study questionnaire was administered to an adult subsample of National Health Interview Survey (NHIS) respondents as part of that year's special inquiry into cancer. Responses to the supplement are recorded in this dataset, along with other information derived from the core 1987 NHIS questionnaire. The Cancer Control Study questionnaire included questions on acculturation (such as language, ethnic identification, and place of birth of self and parents), medical care, food knowledge, cancer knowledge and attitudes, cancer screening knowledge and practice, smoking and other tobacco use, and occupational exposures to harmful substances. Variables from the core questionnaire include height, weight, age, race, Hispanic origin, type of living quarters, region and metropolitan status of residence, marital status, veteran status, education, family income, health status, industry, occupation, activity limitation status, medical conditions, restricted activity days in the past two weeks, bed days in the past two weeks and past 12 months, time interval since the last doctor visit, and the number of doctor visits and short-stay hospital episodes in the past two months.
Curated
National Health Interview Survey, 1987: Cancer Risk Factor Supplement, Epidemiology Study (ICPSR 9341)
Released/updated on: 1992-02-17
Geographic coverage: United States
The National Health Interview Surveys (NHIS) continuously monitor illness and injury, disability and chronic impairments, and health services used by people in the United States. In 1987, additional interviews were conducted with two subsamples of NHIS respondents to gather data on cancer control and epidemiology. Like the Cancer Control supplement, this Cancer Epidemiology supplement included questions on acculturation (in terms of language, ethnicity, and place of birth), dietary knowledge, smoking and tobacco use, and occupational history. The Cancer Epidemiology supplement also included questions on frequency and portion sizes of food and drink items, vitamin and mineral intake, reproduction, hormone use, family's and respondent's history of cancer, height and weight, and participation in social activities. Approximately 90 demographic, health status, and health care variables from the core data files are included on the supplement file.
Curated
National Health Interview Survey, 1987: Multiple Cause of Death, Dates of Death, 1987-1991 (ICPSR 6476)
Released/updated on: 1995-06-05
Geographic coverage: United States
Time period: 1987-01-01--1991-01-01
This data file supplies the date and cause of death for sample persons included in the NATIONAL HEALTH INTERVIEW SURVEY, 1987 (ICPSR 9195) who died between 1987 and the end of 1991. Linkage information collected on respondents 18 years of age and older as part of the National Health Interview Survey (NHIS) was used to match these respondents to the National Death Index. The vital status information produced from the matches can be linked with the NHIS data to provide a longitudinal component to those data. Variables include survey year, quarter, household number, person number, year of death, month of death, whether an autopsy was performed, vital status classification information, causes of death, and hospital and patient status.
Curated
National Health Interview Survey, 1988: Multiple Cause of Death, Dates of Death, 1988-1991 (ICPSR 6477)
Released/updated on: 1995-06-05
Geographic coverage: United States
Time period: 1988-01-01--1991-01-01
This data file supplies the date and cause of death for sample persons included in the NATIONAL HEALTH INTERVIEW SURVEY, 1988 (ICPSR 9412) who died between 1988 and the end of 1991. Linkage information collected on respondents 18 years of age and older as part of the National Health Interview Survey (NHIS) was used to match these respondents to the National Death Index. The vital status information produced from the matches can be linked with the NHIS data to provide a longitudinal component to those data. Variables include survey year, quarter, household number, person number, year of death, month of death, whether an autopsy was performed, vital status classification information, causes of death, and hospital and patient status.
Curated
National Health Interview Survey, 1989: Multiple Cause of Death, Dates of Death, 1989-1991 (ICPSR 6478)
Released/updated on: 1995-06-05
Geographic coverage: United States
Time period: 1989-01-01--1991-01-01
This data file supplies the date and cause of death for sample persons included in the NATIONAL HEALTH INTERVIEW SURVEY, 1989 (ICPSR 9583) who died between 1989 and the end of 1991. Linkage information collected on respondents 18 years of age and older as part of the National Health Interview Survey (NHIS) was used to match these respondents to the National Death Index. The vital status information produced from the matches can be linked with the NHIS data to provide a longitudinal component to those data. Variables include survey year, quarter, household number, person number, year of death, month of death, whether an autopsy was performed, vital status classification information, causes of death, and hospital and patient status.
Curated
National Health Interview Survey, 1990: Multiple Cause of Death, Dates of Death, 1990-1991 (ICPSR 6479)
Released/updated on: 1995-06-05
Geographic coverage: United States
Time period: 1990-01-01--1991-01-01
This data file supplies the date and cause of death for sample persons included in the NATIONAL HEALTH INTERVIEW SURVEY, 1990 (ICPSR 9839) who died between 1990 and the end of 1991. Linkage information collected on respondents 18 years of age and older as part of the National Health Interview Survey (NHIS) was used to match these respondents to the National Death Index. The vital status information produced from the matches can be linked with the NHIS data to provide a longitudinal component to those data. Variables include survey year, quarter, household number, person number, year of death, month of death, whether an autopsy was performed, vital status classification information, causes of death, and hospital and patient status.
Curated
National Health Interview Survey, 1991: Drug and Alcohol Use Supplement (ICPSR 6132)
Released/updated on: 2003-01-10
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. This supplement includes variables from the core Person File (see NATIONAL HEALTH INTERVIEW SURVEY, 1991 [ICPSR 6049]), including sex, age, race, marital status, veteran status, education, income, industry and occupation codes, and limits on activity. Variables unique to this supplement include respondents' use of alcohol, sedatives, tranquilizers, painkillers, inhalants, stimulants, heroin, hallucinogens, marijuana, and cocaine. Respondents were also asked if they ever used a controlled substance, how often they used it, when they last used it, and at what age they first used it. Questions about personal and legal problems due to drug and/or alcohol use were asked as well. In addition, respondents were queried about activities performed while under the influence of drugs and/or alcohol, and if they had tried to cut down on the use of these substances.
Curated
National Health Interview Survey, 1992: Cancer Control Supplement (ICPSR 6344)
Released/updated on: 1994-10-19
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. The 1992 Cancer Control Supplement includes variables from the NHIS core Person File (see NATIONAL HEALTH INTERVIEW SURVEY, 1992 [ICPSR 6343]), including sex, age, race, marital status, veteran status, education, income, industry and occupation codes, and limits on activity. Variables unique to this supplement include items on acculturation (e.g., language, ethnic identification, place of birth of self and parents), medical care, food knowledge, cancer knowledge and attitudes, cancer screening knowledge and practice, smoking and other tobacco use, and occupational exposures to harmful substances.
Curated
National Health Interview Survey, 1992: Cancer Epidemiology Supplement (ICPSR 6349)
Released/updated on: 1994-10-19
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. The 1992 Cancer Epidemiology Supplement includes variables from the NHIS core Person File (see NATIONAL HEALTH INTERVIEW SURVEY, 1992 [ICPSR 6343]), including sex, age, race, marital status, veteran status, education, income, industry and occupation codes, and limits on activity. Variables unique to this supplement include information on acculturation (in terms of language, ethnicity, and place of birth), dietary knowledge, smoking and tobacco use, and occupational history. The supplement also covers frequency and portion sizes of food and drink items, vitamin and mineral intake, hormone use, family's and respondent's history of cancer, and respondent's height and weight.
Curated
National Health Interview Survey, 1992: Family Resources Supplement (ICPSR 2655)
Released/updated on: 1999-03-18
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. The 1992 Family Resources Supplement includes variables from the core Person File (see NATIONAL HEALTH INTERVIEW SURVEY, 1992 [ICPSR 6343]), including sex, age, race, marital status, veteran status, education, industry and occupation codes, and limits on activity. Variables unique to this supplement cover information about individuals' health benefits (Medicare, Medicaid, private hospital insurance, and employer- or union-based coverage), amount of coverage and income received from employment, number of hours worked per week, benefits (Social Security, Supplemental Security Income [SSI], Railroad Retirement, disability), public assistance (food stamps, Aid to Families with Dependent Children [AFDC], length of time on welfare), and income from savings or some other type of bank account. Questions were also asked about the income of family members who are in the armed forces and living at home.
Curated
National Health Interview Survey, 1994: Family Resources Income and Assets Supplement (ICPSR 2656)
Released/updated on: 1999-02-25
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. This supplement contains edited and imputed data for the Income and Assets portion (Part D) of the 1994 NHIS Family Resources questionnaire. Other components of the Family Resources questionnaire cover Access to Care (Part A), Health Care Coverage (Part B), and Private Plan and Coverage Detail (Part C). The Income and Assets supplement contains variables from the NHIS core Person File (see NATIONAL HEALTH INTERVIEW SURVEY, 1994 [ICPSR 2533]), including sex, age, race, marital status, veteran status, education, income, industry and occupation codes, and limits on activity. Other items focus on employment, income from employment and businesses, other income sources including retirement and Social Security, and asset holdings such as cars, houses, businesses, and investment properties. Additional information on the receipt of income from public programs like Aid to Families with Dependent Children (AFDC), Supplemental Security Income (SSI), and food stamps is also included.
Curated
National Health Interview Survey, 1995 (ICPSR 2533)
Released/updated on: 2006-01-18
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. The variables in the Household Record file (Part 1) include type of living quarters, size of family, number of families in the household, if there is a telephone, number of unrelated individuals, and region. The Person Record file (Part 2) includes information on sex, age, race, marital status, Hispanic origin, education, veteran status, family income, family size, major activities, health status, activity limits, employment status, and industry and occupation. These variables are also found in the Condition, Doctor Visit, and Hospital Record files. The Person Record also supplies data on height, weight, bed days, doctor visits, hospital stays, years at residence, and region variables. The Condition Record file (Part 3) contains information for each reported health condition, with specifics on injury and accident reports. The Doctor Visit Record file (Part 4) documents doctor visits within the time period and identifies acute or chronic conditions. The Hospital Record file (Part 5) provides information on medical conditions, hospital episodes, type of service, type of hospital ownership, date of admission and discharge, number of nights in hospital, and operations performed.
Curated
National Health Interview Survey, 1995: Access to Care Supplement (ICPSR 2525)
Released/updated on: 1998-08-28
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. This supplement includes variables from the NHIS core Person File (see NATIONAL HEALTH INTERVIEW SURVEY, 1995 [ICPSR 2533]), including sex, age, race, marital status, veteran status, education, income, industry and occupation codes, and limits on activity. The 1995 Access to Care questionnaire was administered throughout the full year with the exception of the last three weeks of 1995. Variables included in the data file cover estimated number of doctor visits in the past 12 months, estimated short-stay hospital episode days in the past 12 months, usual person/facility used for medical care, type of doctor seen, type of facility, availability of referrals, and reason for not using the facility currently. Also included were items concerning the main reason for no usual source of care, whether cost was a reason for not seeking care, and the need for dental care, prescription medicines, eyeglasses, and mental health care.
Curated
National Health Interview Survey, 1995: AIDS Knowledge and Attitudes Supplement (ICPSR 2531)
Released/updated on: 1998-09-11
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. This supplement includes variables from the NHIS core Person File (see NATIONAL HEALTH INTERVIEW SURVEY, 1995 [ICPSR 2533]), including sex, age, race, marital status, veteran status, education, income, industry and occupation codes, and limits on activity. Questions unique to this supplement cover sources of information on Acquired Immune Deficiency Syndrome (AIDS), perceptions of and discrimination against persons with AIDS, knowledge about modes of Human Immunodeficiency Virus (HIV) transmission, perceived likelihood of transmission by casual contact, experience with blood donation and HIV antibody testing, content of post-test counseling, perceived effectiveness of condoms and mutual monogamy to prevent HIV, and personal knowledge of someone with HIV or AIDS.
Curated
National Health Interview Survey, 1995: Family Resources Income and Assets Supplement (ICPSR 2541)
Released/updated on: 1998-10-15
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. This supplement contains edited and imputed data for the Income and Assets portion (Part D) of the 1995 Family Resources questionnaire for the National Health Interview Survey. Other components of the Family Resources questionnaire cover Access to Care (Part A), Health Care Coverage (Part B), and Private Plan and Coverage Detail (Part C). The Income and Assets supplement contains variables from the NHIS core Person File (see NATIONAL HEALTH INTERVIEW SURVEY, 1995 [ICPSR 2533]), including sex, age, race, marital status, veteran status, education, income, industry and occupation codes, and limits on activity. Other items focus on employment, income from employment and businesses, other income sources including retirement and Social Security, and asset holdings such as cars, houses, businesses, and investment properties. Additional information on the receipt of income from public programs like AFDC, SSI, and food stamps is also included.
Curated
National Health Interview Survey, 1995: Health Insurance Supplement (ICPSR 2530)
Released/updated on: 1998-08-28
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. This supplement includes variables from the NHIS core Person File (see NATIONAL HEALTH INTERVIEW SURVEY, 1995 [ICPSR 2533]), including sex, age, race, marital status, veteran status, education, income, industry and occupation codes, and limits on activity. The Health Insurance questionnaire was administered throughout the full year with the exception of the last three weeks of December. Respondents answered for all members of the household. Variables included in the supplement cover type of health care coverage (Medicare, Medicaid, military/CHAMPUS/CHAMP-VA, public assistance, private insurance), characteristics of the private insurance reported by the respondent (choice of doctor, source of coverage, employer subsidies for premiums, fee-for-service plans, Health Maintenance Organization [HMO] status, HMO type, HMO enrollment size, plan code list), and individual coverage status. Also covered were problems concerning denial or restriction of coverage, "job lock" due to insurance, reasons not covered by insurance (either currently or within the past year) and for how long, and out-of-pocket expenses in the past year for medical services not covered.
Curated
National Health Interview Survey, 1995: Immunization Supplement (ICPSR 2529)
Released/updated on: 1998-08-28
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. This supplement includes variables from the NHIS core Person File (see NATIONAL HEALTH INTERVIEW SURVEY, 1995 [ICPSR 2533]), including sex, age, race, marital status, veteran status, education, income, industry and occupation codes, and limits on activity. Variables in the supplement include vaccines received by children under 6 years old for diphtheria/tetanus/pertussis (DPT), polio, measles or MMR, hemophilus type B or Hib, and hepatitis B, number of shots the child received for each type of vaccine, and other types of shots received. Interviews were conducted with adult respondents, and vaccine information was gathered, when possible, from records maintained by the family.
Curated
National Health Interview Survey, 1995: Year 2000 Objectives Supplement (ICPSR 2528)
Released/updated on: 1998-08-28
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. This supplement includes variables from the NHIS core Person File (see NATIONAL HEALTH INTERVIEW SURVEY, 1995 [ICPSR 2533]), including sex, age, race, marital status, veteran status, education, income, industry and occupation codes, and limits on activity. The Year 2000 Supplement contains items on five selected topics that relate to the Department of Health and Human Services (HHS) Year 2000 Health Objectives: tobacco, nutrition, clinical preventive services, mental health, and physical activity and fitness. Variables relating to smoking include respondent's current smoking status and tobacco use. Items on nutrition cover participation in activities to control weight, exercise, salt intake, and fat intake. Variables in the clinical preventive services section provide information on whether the respondent had a flu shot in the last year, a tetanus shot in the last 10 years, or the pneumonia vaccination, whether the respondent had diabetes, asthma, emphysema, chronic bronchitis, TB, or chronic kidney and liver disease in the past year, whether the respondent experienced extreme fatigue, and whether he or she was treated for cancer. The mental health section includes items on the levels of stress the respondent experienced, the effects of stress on health, steps taken to control stress, emotional/personal problems in the past year, and whether any treatment for these problems had been sought. Variables on physical activity and fitness include types of exercise (walking, gardening, stretching, weight- lifting, jogging, aerobics or aerobic dancing, bicycle riding, stair climbing, swimming, tennis, golf, baseball, handball/raquetball or squash, downhill skiing, cross-country skiing, water skiing, basketball, volleyball, soccer, football, and other sports), how often the respondent performed the activity, number of minutes spent doing the activity, and change in heart rate during the activity. Additionally, respondents were asked about the length of time since their last check-up and whether the doctor had recommended that exercise be started or continued.
Curated
National Health Interview Survey, 1996 (ICPSR 2661)
Released/updated on: 2006-01-18
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. The variables in the Household Record file (Part 1) include type of living quarters, size of family, number of families in the household, presence of a telephone, number of unrelated individuals, and region. The Person Record file (Part 2) includes information on sex, age, race, marital status, Hispanic origin, education, veteran status, family income, family size, major activities, health status, activity limits, employment status, and industry and occupation. These variables are found in the Condition, Doctor Visit, and Hospital Record files as well. The Person Record also supplies data on height, weight, bed days, doctor visits, hospital stays, years at residence, and region variables. The Condition Record file (Part 3) contains information for each reported health condition, with specifics on injury and accident reports. The Doctor Visit Record file (Part 4) documents doctor visits within the time period and identifies acute or chronic conditions. The Hospital Record file (Part 5) provides information on medical conditions, hospital episodes, type of service, type of hospital ownership, date of admission and discharge, number of nights in hospital, and operations performed.
Curated
National Health Interview Survey, 1996: Access to Care Supplement (ICPSR 2657)
Released/updated on: 1999-04-26
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. This supplement includes variables from the NHIS core Person File (see NATIONAL HEALTH INTERVIEW SURVEY, 1996 [ICPSR 2661]), including sex, age, race, marital status, veteran status, education, income, industry and occupation codes, and limits on activity. The 1996 Access to Care questionnaire was administered throughout the full year with the exception of the last three weeks of December. Variables included in the data file cover estimated number of doctor visits in the past 12 months, estimated short-stay hospital episode days in the past 12 months, usual person/facility used for medical care, type of doctor seen, type of facility, availability of referrals, and reason for not using the facility currently. Also included were items concerning the main reason for no usual source of care, whether cost was a reason for not seeking care, and the need for dental care, prescription medicines, eyeglasses, and mental health care.
Curated
National Health Interview Survey, 1996: Health Insurance Supplement (ICPSR 2658)
Released/updated on: 1999-04-26
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. This supplement includes variables from the NHIS core Person File (see NATIONAL HEALTH INTERVIEW SURVEY, 1996 [ICPSR 2661]), including sex, age, race, marital status, veteran status, education, income, industry and occupation codes, and limits on activity. The 1996 Health Insurance questionnaire was administered throughout the full year with the exception of the last three weeks of December. Respondents answered for all members of the household. Variables included in the supplement cover type of health care coverage (Medicare, Medicaid, military/CHAMPUS/CHAMP-VA, public assistance, private insurance), characteristics of the private insurance reported by the respondent (choice of doctor, source of coverage, employer subsidies for premiums, fee-for-service plans, Health Maintenance Organization [HMO] status, HMO type, HMO enrollment size, plan code list), and individual coverage status. Also covered were problems concerning denial or restriction of coverage, "job lock" due to insurance, reasons household members were not covered by insurance (either currently or within the past year) and for how long, and out-of-pocket expenses in the past year for medical services not covered.
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National Health Interview Survey, 1996: Immunization Supplement (ICPSR 2659)
Released/updated on: 1999-04-26
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. This supplement includes variables from the NHIS core Person File (see NATIONAL HEALTH INTERVIEW SURVEY, 1996 [ICPSR 2661]), including sex, age, race, marital status, veteran status, education, income, industry and occupation codes, and limits on activity. Variables in the supplement include vaccines received by children under 6 years old for diphtheria/pertussis/tetanus (DPT), polio, measles or measles/mumps/rubella (MMR), hemophilus type B or Hib, and hepatitis B, number of shots the child received for each type of vaccine, and other types of shots received. Interviews were conducted with adult respondents, and vaccine information was gathered, when possible, from records maintained by the family.
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National Health Interview Survey, 1997 (ICPSR 2954)
Released/updated on: 2006-03-30
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. Implementation of a redesigned NHIS, consisting of a basic module, a periodic module, and a topical module, began with the 1997 data collection. The present collection consists of the basic module only, plus additional household data. The basic module corresponds to the former NHIS core questionnaire and is made up of the family core, the sample adult core, and the sample child core questions. Each record in the Household-Level File (Part 1) contains information on the type of living quarters, number of families in the household responding and not responding, and the month and year of the interview for each eligible sampling unit. The Family-Level File (Part 2) is made up of reconstructed variables from the person-level data of the basic module and includes information on sex, age, race, marital status, Hispanic origin, education, veteran status, family income, family size, major activities, health status, activity limits, and employment status, along with industry and occupation. As part of the basic module, the Person-Level File (Part 3) provides information on all family members with respect to health status, limitation of daily activities, cognitive impairment, and health conditions. Also included are data on years at current residence, region variables, height, weight, bed days, doctor visits, hospital stays, and health care access and utilization. Episode-based information is found in the Injury Episode File (Part 4), while the Poison Episode File (Part 5) examines the cause and date of injury or poisoning, loss of time from work or school, and whether the poisoning resulted in hospitalization. Information in the Injury Verbatim File (Part 6) is comprised of narrative text describing injuries, including type of injury, how the injury occurred, and the body part injured. A randomly-selected adult in each family was interviewed for the Sample Adult File (Part 7) regarding respiratory conditions, renal conditions, AIDS, and joint symptoms, along with questions regarding health status, limitation of daily activities, and behaviors such as smoking, alcohol consumption, and physical activity. The Sample Child File (Part 8) provides information from a knowledgeable adult in the household on medical conditions of one child in the household, such as respiratory problems, seizures, allergies, and use of special equipment such as hearing aids, braces, or wheelchairs. Also included are questions regarding child behavior and the use of mental health services. The Child Immunization File (Part 9) presents information from shot records and supplies vaccination status, along with the number and dates of shots, and information about chicken pox vaccines.
Curated
National Health Interview Survey, 1998 (ICPSR 3107)
Released/updated on: 2006-01-12
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. Implementation of a redesigned NHIS (ICPSR 2954), consisting of a basic module, a periodic module, and a topical module, began in 1997. The present collection consists of the basic module and topical modules on prevention, which contain pregnancy and smoking components along with information on prevention of illness and injury for adults and children. Each record in the Household-Level File (Part 1) of the basic module contains data on the type of living quarters, number of families in the household responding and not responding, and the month and year of the interview for each eligible sampling unit. The Family-Level File (Part 2) is made up of reconstructed variables from the person-level data of the basic module and includes information on sex, age, race, marital status, Hispanic origin, education, veteran status, family income, family size, major activities, health status, activity limits, and employment status, along with industry and occupation. As part of the basic module, the Person-Level File (Part 3) provides information on all family members with respect to health status, limitation of daily activities, cognitive impairment, and health conditions. Also included are data on years at current residence, region variables, height, weight, bed days, doctor visits, hospital stays, and health care access and utilization. A randomly-selected adult in each family was interviewed for the Sample Adult File (Part 4) regarding respiratory conditions, renal conditions, AIDS, joint symptoms, health status, limitation of daily activities, and behaviors such as smoking, alcohol consumption, and physical activity. The Sample Child File (Part 5) provides information from a knowledgeable adult in the household on medical conditions of one child in the household, such as respiratory problems, seizures, allergies, and use of special equipment such as hearing aids, braces, or wheelchairs. Also included are questions regarding child behavior and the use of mental health services. The Child Immunization File (Part 6) presents information from shot records and supplies vaccination status, along with the number and dates of shots, and information about the chicken pox vaccine. Episode-based information is found in the Injury Episode File (Part 7), while information in the Injury Verbatim File (Part 8) is comprised of narrative text describing injuries, including type of injury, how the injury occurred, and the body part injured. The Poison Episode File (Part 9) examines the cause and date of injury or poisoning, loss of time from work or school, and whether the poisoning resulted in hospitalization. The prevention modules are being examined to determine the "Healthy People Objectives for 2010," which have the aim of reducing or preventing illness and disease among Americans. The Pregnancy and Smoking Prevention Module (Part 10) contains a record for every woman 18-49 years of age and provides information on tobacco use and smoking during pregnancy. The Sample Adult Prevention Module (Part 11) examines injury prevention, environmental health issues, tobacco use, nutrition, workplace health promotion, heart disease, stroke, chronic diseases, clinical services used, preventive services used, cancer, oral health, physical activity, mental health, family discussions, and firearm safety. The Sample Child Prevention Module (Part 12) provides information on health conditions, dental care, and injury prevention, along with use of seat belts and safety equipment during participation in sports.
Curated
National Health Interview Survey, 1999 (ICPSR 3397)
Released/updated on: 2006-03-30
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. Implementation of a redesigned NHIS, consisting of a basic module, a periodic module, and a topical module, began in 1997 (see NATIONAL HEALTH INTERVIEW SURVEY, 1997 [ICPSR 2954]). The 1999 NHIS contains the household, family, person, sample adult, sample child, and immunization data files from the basic module. Included in the 1999 NHIS are periodic questions that provide additional detail on topics such as Adult Conditions (ACN), Adult Access and Utilization (AAU), Child Conditions, Limitation of Activity and Health Status (CHS), and Child Access and Utilization (CAU). Each record in the Household-Level File (Part 1) of the basic module contains data on the type of living quarters, number of families in the household responding and not responding, and the month and year of the interview for each sampling unit. The Family-Level File (Part 2) is made up of reconstructed variables from the person-level data of the basic module and includes information on sex, age, race, marital status, Hispanic origin, education, veteran status, family income, family size, major activities, health status, activity limits, and employment status, along with industry and occupation. As part of the basic module, the Person-Level File (Part 3) provides information on all family members with respect to health status, limitation of daily activities, cognitive impairment, and health conditions. Also included are data on years at current residence, region variables, height, weight, bed days, doctor visits, hospital stays, and health care access and utilization. A randomly-selected adult in each family was interviewed for the Sample Adult File (Part 4) regarding respiratory conditions, renal conditions, AIDS, joint symptoms, health status, limitation of daily activities, and behaviors such as smoking, alcohol consumption, and physical activity. The Sample Child File (Part 5) provides information from a knowledgeable adult in the household on medical conditions of one child in the household, such as respiratory problems, seizures, allergies, and use of special equipment such as hearing aids, braces, or wheelchairs. Also included are questions regarding child behavior, the use of mental health services, and Attention Deficit Hyperactivity Disorder (ADHD). The Child Immunization File (Part 6) presents information from shot records and supplies vaccination status, along with the number and dates of shots, and information about the chicken pox vaccine. Episode-based information is found in the Injury Episode File (Part 7), while information in the Injury Verbatim File (Part 8) is comprised of narrative text describing injuries, including type of injury, how the injury occurred, and the body part injured. The Poison Episode File (Part 9) examines the cause and date of injury or poisoning, loss of time from work or school, and whether the poisoning resulted in hospitalization.
Curated
National Health Interview Survey, 2000 (ICPSR 3381)
Released/updated on: 2006-03-30
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. Implementation of a redesigned NHIS, consisting of a basic module, a periodic module, and a topical module, began in 1997 (See NATIONAL HEALTH INTERVIEW SURVEY, 1997 [ICPSR 2954]). This final release of the 2000 NHIS contains the Household, Family, Person, Sample Adult, Sample Child, and Immunization, and Injury and Poison data files from the basic module. The 2000 NHIS also contains the Cancer Control Module (included in the Sample Adult File, Part 4), which corresponds to the Cancer Supplements of 1987 and 1992 and examines such items as diet and nutrition, use of herbal supplements, Hispanic acculturation, genetic testing, and family history. Each record in the Household-Level File (Part 1) of the basic module contains data on the type of living quarters, number of families in the household responding and not responding, and the month and year of the interview for each eligible sampling unit. The Family-Level File (Part 2) is made up of reconstructed variables from the person-level data of the basic module and includes information on sex, age, race, marital status, Hispanic origin, education, veteran status, family income, family size, major activities, health status, activity limits, and employment status, along with industry and occupation. As part of the basic module, the Person-Level File (Part 3) provides information on all family members with respect to health status, limitation of daily activities, cognitive impairment, and health conditions. Also included are data on years at current residence, region variables, height, weight, bed days, doctor visits, hospital stays, and health care access and utilization. A randomly-selected adult in each family was interviewed for the Sample Adult File (Part 4) regarding respiratory conditions, renal conditions, AIDS, joint symptoms, health status, limitation of daily activities, and behaviors such as smoking, alcohol consumption, and physical activity. The Sample Child File (Part 5) provides information from a knowledgeable adult in the household on medical conditions of one child in the household, such as respiratory problems, seizures, allergies, and use of special equipment such as hearing aids, braces, or wheelchairs. Also included are questions regarding child behavior, the use of mental health services, and Attention Deficit Hyperactivity Disorder (ADHD). The Child Immunization File (Part 6) presents information from shot records and supplies vaccination status, along with the number and dates of shots, and information about the chicken pox vaccine. The Injury and Poison Data File (Part 7) contains episode-level data for injuries and poisonings and the Injury and Poison Verbatim File (Part 8) contains verbatim comments for both injuries and poisonings.
Curated
National Health Interview Survey: Longitudinal Study of Aging, 70 Years and Over, 1984-1990 (ICPSR 8719)
Released/updated on: 2011-08-18
Geographic coverage: United States
Time period: 1984-01-01--1990-01-01
This study, commonly known as the Longitudinal Study of Aging (LSOA), was conducted by the National Center for Health Statistics (NCHS) in collaboration with the National Institute on Aging (NIA) and designed to (1) provide mortality rates by demographic, social, economic, and health characteristics that are not available from the vital statistics system, (2) measure change in the functional status and living arrangements of older people, and (3) provide measures of health care use. It was also designed to describe the continuum from functionally independent living in the community through dependence, possible institutionalization, and finally death. The LSOA is an extension of the National Health Interview Survey (NHIS) of 1984, following its sample of 16,148 noninstitutionalized elderly people (55 years and over) living in the United States, with a special focus on those who were 70 years and over in 1984. This release of the LSOA contains data on those respondents who had been 70 years and older at the time of their 1984 interviews. The data include 1986, 1988, and 1990 reinterviews, National Death Index matches from 1984-1989, and 1987 interviews with contact persons named by decedents, as well as selected variables from the 1984 NHIS core questionnaire and its two supplements, Health Insurance and the Supplement on Aging (SOA). Two Medicare files are also included: Part 2, Medicare Hospital Records, and Part 3, Other Medicare Use Records (which covers home health care, hospice, and outpatient use). Links also are provided to allow merging of additional variables from the NATIONAL HEALTH INTERVIEW SURVEY, 1984 (ICPSR 8659).
Curated
National Health Interview Survey on Disability, 1994: Phase I, Disability Outcome Supplement (ICPSR 2539)
Released/updated on: 1998-09-11
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. The 1994 National Health Interview Survey on Disability (NHIS-D), Phase I, was administered at the same time as the NHIS 1994 core, NATIONAL HEALTH INTERVIEW SURVEY, 1994 (ICPSR 6724). This questionnaire collected basic data on disability and was used as a screening device to determine eligibility for the second phase of the survey. This supplement contains four fields: record type, year, person ID, and outcome code for adult and child.
Curated
National Health Interview Survey on Disability, 1994: Phase II, Adult Followback (ICPSR 2568)
Released/updated on: 1998-12-07
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. The National Health Interview Survey on Disability (NHIS-D), first administered in 1994, was designed to collect data that can be used to understand disability and develop public policy. Another goal of this survey was to find a balance among medical, administrative, and social issues involved in disability measurement. The 1994 NHIS-D was conducted in two phases. Phase I was administered at the same time as the 1994 NHIS core. The Phase I Disability questionnaire elicited information on disability and was used as a screening device for Phase II. Phase II has two parts, a Child file and an Adult file. The Adult Followback file includes questions on housing and long-term care services, transportation, social activity, work history/employment, vocational rehabilitation, assistive devices and technologies, health insurance, assistance with key activities, other services, self-direction, family structure, relationships, living arrangements, conditions and impairments, health opinions and behaviors, community services, and proxy status. This file can be linked to the 1994 NHIS core data (ICPSR 6724). In addition, it can be linked to NATIONAL HEALTH INTERVIEW SURVEY ON DISABILITY, 1994: PHASE I, PERSON AND CONDITION DATA (ICPSR 2562), NATIONAL HEALTH INTERVIEW SURVEY, 1994: ACCESS TO CARE SUPPLEMENT (ICPSR 6874), and NATIONAL HEALTH INTERVIEW SURVEY, 1994: HEALTH INSURANCE SUPPLEMENT (ICPSR 6873).
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National Health Interview Survey on Disability, 1994: Phase II, Child Followback (ICPSR 2567)
Released/updated on: 1998-12-10
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. The National Health Interview Survey on Disability (NHIS-D), first administered in 1994, was designed to collect data that can be used to understand disability and develop public policy. Another goal of this survey was to find a balance between medical, administrative, and social issues involved in disability measurement. The 1994 NHIS-D was conducted in two phases. Phase I was administered at the same time as the 1994 NHIS core. The Phase I Disability questionnaire elicited information on disability and was used as a screening device for Phase II. Phase II has two parts, a Child file and an Adult file. The Child Followback file includes questions on services needed by the child, the impact of the child's disability on the family, child care, and emotional and psychological adjustment. This file can be linked to the 1994 NHIS core data (ICPSR 6724). In addition, it can be linked to NATIONAL HEALTH INTERVIEW SURVEY ON DISABILITY, 1994: PHASE I, PERSON AND CONDITION DATA (ICPSR 2562), NATIONAL HEALTH INTERVIEW SURVEY, 1994: ACCESS TO CARE SUPPLEMENT (ICPSR 6874), and NATIONAL HEALTH INTERVIEW SURVEY, 1994: HEALTH INSURANCE SUPPLEMENT (ICPSR 6873).
Curated
National Health Interview Survey on Disability, 1994: Phase I, Person and Condition Data (ICPSR 2562)
Released/updated on: 2006-01-18
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. The National Health Interview Survey on Disability (NHIS-D), Phase I, was administered at the same time as the 1994 NHIS core. NHIS-D was designed to collect data that can be used to understand disability and to develop public policy on disability. Another goal of the survey was to find a balance between the medical, administrative, and social issues involved in disability measurement. The Phase I questionnaire gathered data on disability and was used as a screening device for Phase II. Part 1, Person Data, includes the following topics: sensory, communication ability/limitation, mobility, developmental disability conditions, disability, functional limitations, mental health, services used and benefits received, and perceived disability. Part 2, Condition Data, provides information on the main condition causing the health problem, impairment, limitation, or disability.
Curated
National Health Interview Survey on Disability, 1995: Phase I, Disability Outcome Supplement (ICPSR 2540)
Released/updated on: 1998-10-15
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. The National Health Interview Survey on Disability (NHIS-D), Phase I, was administered at the same time as the NHIS 1995 core, NATIONAL HEALTH INTERVIEW SURVEY, 1995 (ICPSR 2533). This questionnaire collected basic data on disability and was used as a screening device to determine eligibility for the second phase of the survey, the NHIS-D Disability Followback Survey. This supplement contains four fields: record type, year, person ID, and outcome code for adult and child.
Curated
National Health Interview Survey on Disability, 1995: Phase II, Adult Followback (ICPSR 2578)
Released/updated on: 1999-04-26
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. The National Health Interview Survey on Disability (NHIS-D), first administered in 1994, was designed to collect data that can be used to understand disability and develop public policy. Another goal of this survey was to find a balance among medical, administrative, and social issues involved in disability measurement. The 1995 NHIS-D was conducted in two phases. Phase I was administered at the same time as the 1995 NHIS core. The Phase I Disability questionnaire elicited information on disability and was used as a screening device for Phase II. Phase II has two parts, a Child file and an Adult file. The Adult Followback file includes questions on housing and long-term care services, transportation, social activity, work history/employment, vocational rehabilitation, assistive devices and technologies, health insurance, assistance with key activities, self-direction, family structure, relationships, living arrangements, conditions and impairments, health opinions and behaviors, community services, and proxy status. This file can be linked to the 1995 NHIS core data (ICPSR 2533). In addition, it can be linked to NATIONAL HEALTH INTERVIEW SURVEY ON DISABILITY, 1995: PHASE I, PERSON AND CONDITION DATA (ICPSR 2562), NATIONAL HEALTH INTERVIEW SURVEY, 1995: ACCESS TO CARE SUPPLEMENT (ICPSR 2525), and NATIONAL HEALTH INTERVIEW SURVEY, 1995: HEALTH INSURANCE SUPPLEMENT (ICPSR 2530).
Curated
National Health Interview Survey On Disability, 1995: Phase II, Child Followback (ICPSR 2577)
Released/updated on: 1999-04-30
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. The National Health Interview Survey on Disability (NHIS-D), first administered in 1994, was designed to collect data that can be used to understand disability and develop public policy. Another goal of this survey was to find a balance among medical, administrative, and social issues involved in disability measurement. The 1995 NHIS-D was conducted in two phases. Phase I was administered at the same time as the 1995 NHIS core. The Phase I Disability questionnaire elicited information on disability and was used as a screening device for Phase II. Phase II has two parts, a Child file and an Adult file. The Child Followback file includes questions on services needed by the child, the impact of the child's disability on the family, child care, and emotional and psychological adjustment. This file can be linked to the 1995 NHIS core data (ICPSR 2533). In addition, it can be linked to NATIONAL HEALTH INTERVIEW SURVEY ON DISABILITY, 1995: PHASE I, PERSON AND CONDITION DATA (ICPSR 2562), NATIONAL HEALTH INTERVIEW SURVEY, 1995: ACCESS TO CARE SUPPLEMENT (ICPSR 2525), and NATIONAL HEALTH INTERVIEW SURVEY, 1995: HEALTH INSURANCE SUPPLEMENT (ICPSR 2530).
Curated
National Health Interview Survey on Disability, 1995: Phase I, Person and Condition Data (ICPSR 2576)
Released/updated on: 2006-01-18
Geographic coverage: United States
The purpose of the National Health Interview Survey (NHIS) is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kinds of health services people receive. The National Health Interview Survey on Disability (NHIS-D) Phase I was administered at the same time as the 1995 NHIS core. The NHIS-D was designed to collect data that can be used to understand disability and to develop public policy on disability. Another goal of the survey was to find a balance among the medical, administrative, and social issues involved in disability measurement. The Phase I questionnaire gathered data on disability and was used as a screening device for Phase II. Part 1, Person Data, includes the following topics: sensory data, communication ability/limitation, mobility, developmental disability conditions, disability, functional limitations, mental health, services used and benefits received, and perceived disability. Part 2, Condition Data, provides information on the main condition causing the health problem, impairment, limitation, or disability.
Curated
National Health Interview Surveys, 1969-1981: Cumulative Core File (ICPSR 8629)
Released/updated on: 1992-02-16
Geographic coverage: United States
The basic purpose of the Health Interview Survey is to obtain information about the amount and distribution of illness, its effects in terms of disability and chronic impairments, and the kind of health services people receive. The Health Interview Survey, 1969-1981 is a cumulative core dataset. Criteria for selection were the following: respondent's age greater than or equal to 30 at the time of the interview, variables of specific substantive interest, information on a given variable being available for at least 8 years, variables selected only once (though parallel entries exist on the input files that were merged), health conditions that were defined as chronic by NHIS and caused or contributed to limitation of activity.
Curated
National Health Interview Surveys, 1986-1994: Multiple Cause of Death, Dates of Death, 1986-1995 (ICPSR 2183)
Released/updated on: 2006-01-18
Geographic coverage: United States
Time period: 1986-01-01--1995-01-01
This data collection supplies date and cause of death data for sample persons included in the National Health Interview Surveys (NHIS) for the years 1986 through 1994. Beginning with survey year 1986, linkage information was collected on NHIS respondents aged 18 and older to allow for matching with other data systems such as the National Death Index (NDI). The Multiple Cause of Death (MCD) data files contain information on those persons with scores high enough to be considered deceased or scores high enough that they may be included in an analysis as deceased. The Ineligible Cases data files contain person IDs of those NHIS participants under the age of 18 as well as those with insufficient information to permit linkage with the NDI. These cases should be excluded from the NHIS survey data files prior to analysis. Linkage of the NHIS respondents with the NDI provides a longitudinal component to the NHIS that allows for the ascertainment of vital status. The addition of vital status permits the use of NHIS data to estimate survival, mortality, and life expectancy while using the richness of the NHIS questionnaires, both core and supplements, as covariates. These data files must be used in conjunction with the basic NHIS data files (1986 [ICPSR 8976], 1987 [ICPSR 9195], 1988 [ICPSR 9412], 1989 [ICPSR 9583], 1990 [ICPSR 9839], 1991 [ICPSR 6049], 1992 [ICPSR 6343], 1993 [ICPSR 6534], 1994 [ICPSR 6724]). Variables included in the MCD files cover year of interview, quarter, household number, person number, month and year of death, vital status, and causes of death. The Ineligible Cases files contain a person ID that matches columns 3-16 on the NHIS public use data files.