Description & Citation--Study No. 6693 |
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| ICPSR Study No.: | 6693 |
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| Title: | National Comorbidity Survey: Baseline (NCS-1), 1990-1992 |
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| Principal Investigator(s): | Ronald C. Kessler, University of Michigan. Institute for Social Research. Survey Research Center |
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| Funding Agency: | National Institute of Mental Health (NIMH) |
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| National Institute on Drug Abuse (NIDA) |
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| W.T. Grant Foundation |
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| Grant Number: | R01 MH/DA46376, R01 MH49098 (NIMH) |
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| supplement to R01 MH/DA46376 (NIDA) |
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| 90135190 (W.T. Grant Foundation) |
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| Bibliographic Citation: | Kessler, Ronald C. NATIONAL COMORBIDITY SURVEY: BASELINE
(NCS-1), 1990-1992 [Computer file]. Conducted by University of
Michigan, Survey Research Center. ICPSR06693-v4. Ann Arbor, MI:
Inter-university Consortium for Political and Social Research
[producer and distributor], 2007-01-09. |
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| Summary: | The National Comorbidity Survey: Baseline (NCS-1) was a
collaborative epidemiologic investigation designed to study the
prevalence and correlates of DSM III-R disorders and patterns and
correlates of service utilization for these disorders. The NCS-1 was
the first survey to administer a structured psychiatric interview to a
nationally representative sample. The survey was carried out in the
early 1990s with a household sample of over 8,000
respondents. Subsamples of the original respondents completed the
NCS-1 Part II survey and Tobacco Use Supplement. Diagnoses were based
on a modified version of the Composite International Diagnostic
Interview (the UM-CIDI), which was developed at the University of
Michigan for the NCS-1. Drugs covered by this survey include alcohol,
tobacco, sedatives, stimulants, tranquilizers, analgesics, inhalants,
marijuana/hashish, cocaine, hallucinogens, heroin, nonmedical use of
prescription drugs, and polysubstance use. Other items include
demographic characteristics, personal and family history of substance
use and abuse, substance abuse treatment, data on drug use including
recency, frequency, and age at first use, problems resulting from the
use of drugs, personal and family history of psychiatric problems,
mental health treatment, symptoms of psychiatric disorders, mental
health status, HIV risk behaviors, and physical health status. |
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| Subject Term(s): | alcohol, alcohol consumption, cocaine, drug use, drugs, hallucinogens, health status, heroin, inhalants, marijuana, mental disorders, mental health, mental health services, prescription drugs, psychiatric services, sedatives, self medication, smoking, stimulants, substance abuse, tobacco products, tobacco use, tranquilizers |
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| Geographic Coverage: | United States |
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| Time Period: | 1990 - 1992 |
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| Date(s) of Collection: | September 14, 1990 - February 6, 1992 |
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| Unit of Observation: | individual |
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| Universe: | Persons aged 15 to 54 years in the noninstitutionalized
civilian population in the 48 coterminous United States. |
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| Data Type: | survey data |
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| Data Collection Notes: | Users are reminded that NCS-1 Part I, Part II, and
Tobacco Use Supplement variables are all contained in Part 1, the
NCS-1 Main Data file. The DSM-III-R diagnosis and demographic
variables are contained in Part 2, the NCS-1 Diagnosis/Demographic
Data file. |
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| Sample: | Stratified, multistage area probability sample. The
inclusion of respondents as young as 15 years, compared with the
18-year-old lower age limit found in most general population surveys,
was based on an interest in minimizing recall bias of early-onset
disorders. The exclusion of respondents aged older than 54 years was
based on evidence from the Epidemiologic Catchment Area Study that
active comorbidity between substance use disorders and nonsubstance
psychiatric disorders is much lower among persons older than 54 years
than among those aged 54 years and younger. The Part II NCS-1 survey
was administered to a subsample of 5,877 respondents. The Tobacco Use
Supplement was completed by a subsample of 4,414 respondents. The
NCS-1 also includes a supplemental sample of students living in campus
group housing and a nonrespondent survey. |
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| Weight: | Depending on the section(s) of the NCS-1 survey from which
the variable(s) originated, one of four sampling weights must be
selected and applied. The Part I and Part II weights (p1fwt and
p2wtv3, respectively) are a combination of the various weights
described in NCS-1 papers to adjust for differential household size
and differential nonresponse and post-stratification. The Tobacco Use
Supplement weight (tobacwt) is a rescaling of the Part I weight for
analysis of tobacco supplement variables only. The Part II Tobacco Use
Supplement weight (p2tobwt) is a rescaling of the Part II weight for
analysis of combinations of Part II and Tobacco Supplement variables.
Please refer to the ICPSR Processor Notes in the codebook for details
on determining the appropriate weight to use when analyzing a specific
variable or combination of variables. |
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| Mode of Data Collection: | face-to-face interview |
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| telephone interview |
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| Response Rates: | The response rate was 82.6 percent. |
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| Note: | A list of the data formats available for this study can be found in the
summary of holdings. Detailed file-level information (such as LRECL, case count, and variable count) is listed in the
file manifest. |
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| Original ICPSR Release: | 2000-05-01 |
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| Version History: | The last update of this study occurred on 2007-01-09. |
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| 2007-01-09 - A few variables were removed from the
collection. Documentation was updated to reflect the changes. |
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| 2006-03-06 - This collection, formerly distributed by
ICPSR as National Comorbidity Survey, 1990-1992, has been retitled to
provide a more specific title. A Stata system file has been added for
Part 1, NCS-1 Main Data. Several changes were made to Part 2, NCS-1
Diagnosis/Demographic data. The following variable labels have been
fixed: GAD6M1 and GAD1M1. Value labels for the following variables
have been fixed: DEPONS, DYSONS, PDREC, DRGAREC, PTSDREC, and NAPREC.
Also, a SAS transport (XPORT) file, SPSS portable file, and Stata
system file have been added for the Diagnosis/Demographic Data. |
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| 2005-11-04 - On 2005-03-14 new files were added to
one or more datasets. These files included additional setup files as
well as one or more of the following: SAS program, SAS transport, SPSS
portable, and Stata system files. The metadata record was revised
2005-11-04 to reflect these additions. |
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| 2002-07-11 - The codebooks for this study were
updated with an expanded set of instructions for properly weighting
the data. Errors in the frequency counts for five variables were also
corrected. |
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| Dataset(s): | - DS1: NCS-1 Main Data
- DS2: NCS-1 Diagnosis/Demographic Data
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