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The Chicago Community Adult Health Study (CCAHS) consists of four interrelated components that were conducted simultaneously: (1) a survey of adult health on a probability sample of 3,105 Chicago adults, including direct physical measurements of their blood pressure and heart rate and of height, weight, waist and hip circumference, and leg length; (2) a biomedical supplement which collected blood and/or saliva samples on a subset of 661 survey respondents; (3) a community survey in which individuals described aspects of the social environment of all survey respondents' neighborhoods; and (4) a systematic social observation (SSO) of the blocks in which potential survey respondents resided, including a lost letter drop (Milgram et al. 1965) as an unobtrusive measure of neighborhood social capital/sense of responsibility to help others. The latter two extend a community survey and SSO of neighborhoods carried out by the Project on Human Development in Chicago Neighborhoods (PHDCN) in 1995. The adult health survey and the community survey were conducted jointly through face-to-face interviews with a stratified, multistage probability sample of 3,105 individuals aged 18 and over and living in the city of Chicago, with a response rate of 72 percent that is about the highest currently attainable in large urban areas. In addition, blood pressure, heart rate, and physical measurements (of height, weight, waist and hips, and leg length) were collected during the survey interview, and blood and saliva samples from 661 respondents or 60 percent of those doing the survey in the 80 "focal" neighborhood clusters (NCs). SSOs were conducted on 1,663 of the 1,672 city blocks on which each respondent lived. The CCAHS is the largest of five projects under the NIH-funded Michigan Interdisciplinary Center on Social Inequalities, Mind and Body Mind (#P50HD38986), one of five Mind-Body Centers funded by the National Institutes of Health in late 1999. This study will advance the understanding of socioeconomic and racial/ethnic disparities in health, a major priority of the Public Health Service and the National Institutes of Health.

The PI-supplied summary mentions that the study is comprised of four components. However, for the purposes of this data release there are three distinct datasets. Demographic variables include age, birth year, race, ethnicity, number of children in the household, number of children living elsewhere, number of times the respondent has been married, and relationship status, religious preference, and sex.

The Community Indicators project is a research-based initiative that is part of the Knight Foundation's ongoing effort to learn more about the 26 communities it serves through its grant-making. To document changes in the quality of life in its communities, the foundation tracks a few key indicators over time. The project focuses on aspects of community life related to the six grant-making areas that are the priority of the Knight Community Partners Program. The Knight Community Partners Program prefers to make grants in the following six priority areas: education; the well-being of children and families; housing and community development; economic development; civic engagement and positive human relations; and the vitality of cultural life. The foundation expected to update both the community surveys and the community profiles approximately every three years.

Local area surveys were conducted in each of the 26 communities in both 1999 and 2002. In 2002, a number of the local area surveys were supplemented with regional surveys or surveys of a neighboring city. The 26 local areas surveyed in 1999 were: Milledgeville, GA; Long Beach, CA; Gary, IN; Boca Raton (Palm Beach County), FL; Boulder, CO; Philadelphia, PA; Akron, OH; Macon, GA; Columbus, GA; Aberdeen, SD; Grand Forks, ND; Wichita, KS; Charlotte, NC; Columbia, SC; Myrtle Beach, SC; Tallahassee, FL; Duluth, MN; St. Paul, MN; State College, PA; Fort Wayne, IN; Biloxi, MS; Detroit, MI; Lexington, KY; San Jose, CA; Bradenton, FL; Miami, FL. For 2002, the 11 regional and neighboring city areas also surveyed were: Charlotte, NC - Regional; Columbus, SC - Second City; Detroit, MI - Regional; Duluth, MN - Second City; Gary, IN - Regional; Grand Forks, SD - Second City; Lexington, KY - Regional; Philadelphia, PA - Regional; Philadelphia, PA - Second City, and Miami - Dade, FL and Miami - Broward, FL in place of Miami, FL. National surveys were also conducted in order to provide comparative benchmark measures. The surveys measured citizens' civic engagement and attitudes concerning seven topic areas: education, arts and culture, children and social welfare, community development, homelessness, literacy, and citizenship. Questions relating specifically to arts and culture include frequency of attendance at arts events or museums and satisfaction with arts and cultural opportunities.

The study was conducted by Princeton Survey Research Associates and funded by the Knight Foundation. In 1999, 17,417 telephone interviews were conducted from February 10 through December 1. In 2002, 21,722 telephone interviews were conducted from January 2 through October 3.

The quality of community life in the Detroit metropolitan area and factors influencing it were the main focus for this Detroit Area Study. To gauge perceptions of the quality of life in the Detroit tri-county area, respondents were asked how satisfied or dissatisfied they were with the tri-county area in general, with their neighborhoods, and with the quality of local community services, such as quality of local roads, public schools, police and garbage collection. In addition, the survey measured respondents' satisfaction or dissatisfaction with their own education, income, health, amount of leisure time, marriage, family life, job, home, and other aspects of their lives. Respondents also were questioned about their expectations for the future, their friendships in the tri-county area, friendliness with neighbors, use of recreational facilities, and where their children played. The survey also sought respondents' opinions on a wide range of other issues such as race relations, social stratification, abortion, the benefits of the free enterprise system, whether or not the United States was a meritocracy, and the meaning and value of democracy. Additional information gathered by the survey includes duration of residence in the tri-county area and at the current residence, place of previous residence, home ownership, rent payments, value of the home, number of separate bedrooms, motor vehicle ownership and use, use of public transportation, employment status, occupation and industry, independence and authority at work, number of siblings ever born, religious preference, social class identification, political preference, and information on age, sex, place of birth, income, race, ethnicity, and household composition.

This study was a longitudinal extension that examined trajectories of adult offending in a sample of women who participated in a randomized intervention trial aimed at reducing conduct problems and delinquency during adolescence. In the original study, girls ages 13 to 17 who had been referred for out-of-home placement due to chronic delinquency were randomly assigned to participate in services as usual (group care; GC) or in Treatment Foster Care Oregon (TFCO), previously known as Multidimensional Treatment Foster Care. TFCO is an evidence-based intervention designed as an alternative to residential care or incarceration for juvenile justice-involved adolescents and has been found to be effective in reducing youth delinquency, deviant peer affiliation, adolescent pregnancy, as well as longer term effects in reducing young adult criminal involvement, depression, suicidality, and substance use problems. The current study further evaluated outcomes in this sample of women at least six years after the last follow-up by examining trajectories of offending and involvement with the criminal justice system, health-risking behaviors, trauma, and long-term health outcomes, including biological indicators.

The Midlife in the United States (MIDUS) is a collaborative, interdisciplinary investigation of patterns, predictors, and consequences of midlife development in the areas of physical health, psychological well-being, and social responsibility. A description of the study and findings from it are available at http://www.midus.wisc.edu.

The first wave of the MIDUS study (MIDUS 1 or M1) collected survey data from a total of 7,108 participants. The baseline sample was comprised of individuals from four subsamples: (1) a national RDD (random digit dialing) sample (n=3,487); (2) oversamples from five metropolitan areas in the U.S. (n=757); (3) siblings of individuals from the RDD sample (n=950); and (4) a national RDD sample of twin pairs (n=1,914). All eligible participants were non-institutionalized, English-speaking adults in the coterminous United States, aged 25 to 74.

Data from the samples were collected primarily in 1995/96. The survey (Project 1) dataset contains responses from a 30-minute Phone interview and two 50-page Self-Administered Questionnaire (SAQ) instruments. Of the 7,108 respondents who completed the Phone interview, 6,325 also completed the SAQ.

This updated version of the study is comprised of three primary datasets:

Dataset 1, Main, Siblings, and Twin Data, contains responses from the main survey of 7,108 respondents. Respondents were asked to provide extensive information on their physical and mental health throughout their adult lives, and to assess the ways in which their lifestyles, including relationships and work-related demands, contributed to the conditions experienced. Those queried were asked to describe their histories of physical ailments, including heart-related conditions and cancer, as well as the treatment and/or lifestyle changes they went through as a result. A series of questions addressed alcohol, tobacco, and illegal drug use, and focused on history of use, regularity of use, attempts to quit, and how the use of those substances affected respondents' physical and mental well-being. Additional questions addressed respondents' sense of control over their health, their awareness of changes in their medical conditions, commitment to regular exercise and a healthy diet, experience with menopause, the decision-making process used to deal with health concerns, experiences with nontraditional remedies or therapies, and history of attending support groups. Respondents were asked to compare their overall well-being with that of their peers and to describe social, physical, and emotional characteristics typical of adults in their 20's, 40's, and 60's. Information on the work histories of respondents and their significant others was also elicited, with items covering the nature of their occupations, work-related physical and emotional demands, and how their personal health had correlated to their jobs. An additional series of questions focusing on childhood queried respondents regarding the presence/absence of their parents, religion, rules/punishments, love/affection, physical/verbal abuse, and the quality of their relationships with their parents and siblings. Respondents were also asked to consider their personal feelings of accomplishment, desire to learn, sense of control over their lives, interests, and hopes for the future.

The Datasets previously numbered 2 and 3 have been removed to avoid redundancies, and all datasets have been renumbered. Please refer to the readme file.

Dataset 2, Twin Screener Data, provides the first national sample of twin pairs ascertained randomly via the telephone.

Dataset 3, Coded Text Responses, describes how open-ended textual responses in the MIDUS 1 Computer-Assisted Telephone Interview (CATI) and Self-Administered Questionnaire (SAQ) were transformed into categorical numeric codes. These codes are included in a stand-alone dataset containing only those cases (N=3,950) that contained text data in their responses.

Online Analysis Only: Datasets 1, 2, and 3 were merged together by the SU_ID variable to form "Merged Data with Weights (Online Analysis Only)" (Dataset 4) for online analysis capabilities.

MIDUS also maintains a Colectica portal, which allows users to interact with variables across waves and create customized subsets. Registration is required.

In 1995-1996, the MacArthur Midlife Research Network carried out a national survey of 7,108 Americans aged 25 to 74 (MIDLIFE IN THE UNITED STATES (MIDUS), 1995-1996 [ICPSR 2760]). The purpose of the study was to investigate the role of behavioral, psychological, and social factors in understanding age-related differences in physical and mental health. The study was innovative for its broad scientific scope, its diverse samples (which included twins and the siblings of main sample respondents), and its creative use of in-depth assessments in key areas (e.g., daily stress and cognitive functioning). A description of the study and findings from it are available at http://www.midus.wisc.edu. With support from the National Institute on Aging, a longitudinal follow-up of the original MIDUS samples: core sample (N = 3,487), metropolitan over-samples (N = 757), twins (N = 925 complete pairs), and siblings (N = 950), was conducted in 2004-2006. Guiding hypotheses for it, at the most general level, were that behavioral and psychosocial factors are consequential for physical and mental health. MIDUS 2 respondents were aged 35 to 86. Data collection largely repeated baseline assessments (e.g., phone interview and extensive self-administered questionnaire), with additional questions in selected areas (e.g., cognitive functioning, optimism and coping, stressful life events, and caregiving). To add refinements to MIDUS 2, an African American sample (N = 592) was recruited from Milwaukee, Wisconsin, who participated in a personal interview and completed a questionnaire paralleling the above assessments. Survey data for the Milwaukee sample are available in a separate project [ICPSR 22840]. Also administered was a modified form of the mail questionnaire, via telephone, to respondents who did not complete a self-administered questionnaire.