Data

The Center is currently involved in projects using the data decribed below.

The Nihon University Longitudinal Study on Aging (NUJLSOA)
http://www.usc.edu/dept/gero/CBPH/nujlsoa
The NUJLSOA is a longitudinal Survey of a nationally representative sample of the Japanese population age 65 and older begun in 1999. Interviews were conducted in November 1999 with additional respondents added in March 2000 when a follow-up of nonrespondents was completed. This resulted in a sample of 4,997 and a response rate of 75%. The final sample of 4,997 respondents ranged in age from 65 to 104 and was nearly 41% male, and had a mean age of 77years. The surveys included questions on topics such as functioning, chronic conditions and impairments, health behaviors, and social and demographic characteristics. The NUJLSOA was designed to be comparable to the U.S. Longitudinal Study on Aging II (LSOAII). Data from the first wave can be obtained from Nihon University through Yasuhiko Saito (yasuhik@cin.nihon-u.ac.jp). Data from the second wave will be available shortly.

The Longitudinal Study on Aging (LSOAII/Second Supplement on Aging)
http://www.cdc.gov/nchs/about/otheract/aging/soa.htm
The LSOAII was designed to provide information on the health of the community dwelling population of the United States 70 years of age and over. The LSOA II was conducted under the auspices of the National Center for Health Statistics (NCHS) with support from the National Institute on Aging. Because of the complex sample design used to select respondents, the data are weighted to reflect the U.S. noninstitutionalized population 70 years of age and over. The SOAII is a supplement to the National health Interview Survey . There were 9,477 respondents at the first interview. One wave is currently available for this data set and the second wave is projected to be available in June 2002.

National Health Interview Survey
http://www.cdc.gov/nchs/nhis.htm
The National Health Interview Survey (NHIS) is an ongoing national sample of approximately 50,000 households and 100,000 individuals from the resident civilian population. The survey is designed to monitor health and disability of the U.S. population. This is an aging survey beginning in 1957, and at USC we have machine readable files from 1969 through 1996.

The Third National Health and Nutrition Examination Survey (NHANES III)
http://www.cdc.gov/nchs/nhanes.htm
The survey and examination involved the collection of data over the 1988-94 period from about 40,000 persons in a nationally representative sample of the U.S. noninstitutional population. In order to address health issues relevant to older persons and minorities, these groups were oversampled. The NHANES study consisted of survey, clinical examination, and laboratory components as well as a survey instrument.

California Work and Health Survey
http://medicine.ucsf.edu/programs/cwhs/
The California Work and Health Survey (CWHS) is a statewide representative study designed to provide information about the health, social and economic circumstances of the adult population in California conducted by the Field Institute and funded by the California Wellness Foundation at the University of California San Francisco. The data were collected in 1998 and 1999. There are 1,105 respondents, 230 who were interviewed only in 1998, 355 interviewed in both years, and 520 who were interviewed for the first time in 1999. This sample is ethnically diverse: non-Hispanic whites (72%), Hispanics (15%), Asians (7%), African Americans (6%). There is also a diversity of social and economic well-being.

The Health and Retirement Survey (HRS) and the Asset and Health Dynamics of the Oldest Old (AHEAD)
http://www.umich.edu/~hrswww/
The Health and Retirement Survey (HRS) (N=9,741 at baseline) and the Asset and Health Dynamics of the Oldest Old (AHEAD) (N=7,443 at baseline). The HRS began in 1992, surveying persons aged 51-61 years and their spouses. The AHEAD survey began in 1994, interviewing respondents aged 70 years and older and their spouses. Respondents from both data sets have been surveyed again approximately every two years. There are currently 4 waves of AHEAD and 5 of HRS. The data have a range of social, economic, and health information.

The USC Longitudinal Study of the Generations
http://www.usc.edu/dept/gero/research/4gen/
The USC Longitudinal Study of the Generations began in 1971 as a survey of intergenerational relations within 300 three-generation California families: the grandparents (then in their sixties), middle-aged parents (then in their early forties), and grandchildren (then aged 16-26). The purpose of the study is to investigate what changes and what stays the same in inter-generational relations of the family as the decades pass, and with the aging of each generation, to explore how these changes impact on the well-being of individuals within the family. The study has broadened since then--to include a fourth generation, the great-grandchildren of these same families --and further surveys at 1985, 1988, 1991, and 1994. The research is funded by the National Institute on Aging.

The MacArthur Research Network on Successful Aging Community Study
The MacArthur Research Network on Successful Aging Community Study is a longitudinal, three-site cohort study of high functioning Americans aged 70-79 in 1988. The MacArthur Study followed these persons over 7 years, re-interviewing them in 1991 and 1995. In addition to basic social and demographic variables, biological sample of blood and urine have been analyzed, with additional sample stored for later assays. More information can be obtained via Teresa Seeman (Tseeman@mednet.ucla.edu).