Chinese Longitudinal Healthy Longevity Survey (CLHLS), 1998-2002 (ICPSR 3891)

Principal Investigator(s): Yi, Zeng, Duke University and Peking University; Vaupel, James W., Max Planck Institute and Duke University; Zhenyu, Xiao, China National Research Center on Aging; Yuzhi, Liu, Peking University. Center for Healthy Aging and Family Studies; Chunyuan, Zhang, Peking University. Center for Healthy Aging and Family Studies


This data collection provides information on health status and quality of life of the elderly aged 65 and older in 22 provinces of China in the period 1998 to 2002. The study was conducted to shed light on the determinants of healthy human longevity and oldest-old mortality. To this end, data were collected on a larger percentage of the oldest population, including centenarian and nonagenarian, than had previously been studied. The CLHLS provides information on the health, socioeconomic characteristics, family, lifestyle, and demographic profile of this aged population. Data are provided on respondents' health conditions, daily functioning, self-perceptions of health status and quality of life, life satisfaction, mental attitude, and feelings about aging. Respondents were asked about their diet and nutrition, use of medical services, and drinking and smoking habits, including how long ago they quit either or both. They were also asked about their physical activities, reading habits, television viewing, and religious activities, and were tested for motor skills, memory, and visual functioning. In order to ascertain their current state of health, respondents were asked if they suffered from such health conditions as hypertension, diabetes, heart disease, stroke, cancer, emphysema, asthma, tuberculosis, cataracts, glaucoma, gastric or duodenal ulcer, arthritis, Parkinson's disease, bedsores, or other chronic diseases. They were also asked if they needed assistance with bathing, dressing, toileting, or feeding, and who provided help in times of illness. Other questions focused on siblings, parents, and children, the frequency of family visits, and the distance lived from each other. Demographic items specify age, sex, ethnicity, place of birth, marital history and status, history of childbirth, living arrangements, education, main occupation before age 60, and sources of financial support.

Series: Chinese Longitudinal Healthy Longevity Survey (CLHLS) Series

Access Notes

  • Data in this collection are available only to users at ICPSR member institutions. Please log in so we can determine if you are with a member institution and have access to these data files.

    One or more files in this collection have special restrictions ; consult the restrictions note to learn more.

    This data collection may not be used for any purpose other than statistical reporting and analysis. Use of these data to learn the identity of any person or establishment is prohibited. In preparing the data files for this collection for public archiving and distribution, the producers have removed direct identifiers and characteristics that might lead to identification of data subjects. Users interested in obtaining a CD-ROM containing the 1998, 2000, and 2002 Chinese Longitudinal Healthy Longevity Survey micro datasets need to download the Chinese Longitudinal Healthy Longevity Survey restricted data use agreement form from the ICPSR Web site.


DS0:  Study-Level Files
DS1:  1998-2002 Longitudinal, Version 1
No downloadable data files available.
DS2:  2000-2002 Longitudinal, Version 1
No downloadable data files available.
DS3:  2002 Cross-Sectional Data, Version 1
No downloadable data files available.

Study Description


Yi, Zeng, James W. Vaupel, Xiao Zhenyu, Liu Yuzhi, and Zhang Chunyuan. Chinese Longitudinal Healthy Longevity Survey (CLHLS), 1998-2002. ICPSR03891-v2. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2007-02-06.

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This study was funded by:

  • United States Department of Health and Human Services. National Institutes of Health. National Institute on Aging (PO1AG08761)

Scope of Study

Subject Terms:    activities of daily living, aging, caregivers, diet, family relations, health care services, health status, life expectancy, life satisfaction, living arrangements, marriage rates, medical conditions, older adults, perceptions, quality of life

Smallest Geographic Unit:    counties

Geographic Coverage:    China

Time Period:   

  • 1998--2002

Date of Collection:   

  • 1998--2002

Unit of Observation:    individual

Universe:    The most elderly population in counties and cities of 22 provinces in China in the period 1998-2002.

Data Type(s):    survey data


Sample:    All centenarians who voluntarily agreed to participate in the study in the randomly selected nearly half of the counties and cities of 22 provinces in China. For each centenarian, one octogenarian aged 80-89 living nearby, one nearby nonagenarian aged 90-99, and one nearby younger elder aged 65-79 of pre-designated age and sex were interviewed.

Mode of Data Collection:    face-to-face interview, self-enumerated questionnaire

Response Rates:    1998 Wave: 98 percent for the oldest old. 2000 Wave: 98.9 percent for surviving and replenished interviewees, and 97.9 percent for the deceased respondents based on the next-of-kin proxy. The proportion lost to follow-up was 9.6 percent.


Original ICPSR Release:   2006-02-20

Version History:

  • 2007-02-06 The data have been updated. There are now three separate data files, and multiple documentation files are available.

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