| Summary: | The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. One such measure was the Health Screen, used to obtain the general health condition of the subjects. It was administered to subjects' caregivers for Cohorts 0 to 15 and to the subjects, themselves, for Cohort 18 and it was taken from the Behavioral Risk Factor Surveillance Survey. The Wave 2 instrument contained a more detailed health history than the Wave 1 instrument used in PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): HEALTH SCREEN, WAVE 1, 1994-1997 (ICPSR 13593). The Wave 2 instrument included information regarding lifetime illnesses and past-year health.
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