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

Version Date: Feb 6, 2007 View help for published

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


Version V2

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.

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

Export Citation:

  • RIS (generic format for RefWorks, EndNote, etc.)
  • EndNote
United States Department of Health and Human Services. National Institutes of Health. National Institute on Aging (PO1AG08761)


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. Due to the sensitive nature of the restricted data, users will need to complete a Restricted Data Use Agreement before they can obtain the restricted version. These forms can be accessed on the download page associated with this dataset. Completed forms with original signature(s) should be emailed to

Inter-university Consortium for Political and Social Research
1998 -- 2002
1998 -- 2002

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.

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


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.



2018-02-15 The citation of this study may have changed due to the new version control system that has been implemented. The previous citation was:
  • 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.

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



  • Curation and dissemination of this study is provided by the institutional members of ICPSR, and data is available only to users at ICPSR member institutions. To determine if you are at a member institution, check the list of ICPSR member institutions, or learn more about becoming a member.

  • One or more files in this data collection have special restrictions. Restricted data files are not available for direct download from the website; click on the Restricted Data button to learn more.