Chinese Longitudinal Healthy Longevity Studies

A. Introduction of Chinese longitudinal survey on Healthy Longevity;

B. Association of Religious Participation with Health and Survival among the Oldest Old in China

A. A BRIEF INTRODUCTION to Chinese Longitudinal Survey on Healthy Longevity

• This is an international collaborative project, aiming at

•To better understand determinants of healthy longevity, such as social, economical, behavioral, environmental and biological factors.

•To enhance academic research and policy analysis on healthy aging.

Progress of longitudinal surveys in 1998, 2000, and 2002

(1) Achieved sample size distributions.

-- Extensive questionnaire data were gathered from 8,959, 11,161, and 11,163 oldest-old aged 80+ in 1998, 2000, and 2002, respectively.

-- we added 4,894 younger elderly aged 65-79 and 4,478 elderly interviewees’ adult children aged 35-65 into our sample in 2002 wave. The total sample size is now over 20,000 interviewees including oldest-old (focus), younger elderly (as a comparison group) and elders’ adult children (intergenerational relations and healthy longevity).

-- Data on date/cause of death, health status, socioeconomic status, and degree/length of disability and suffering before dying, etc., were collected from 2,783, 2,406 and 1,449 deceased interviewees aged 100+, 90-99, and 80-89, respectively.

Sample Distribution, 1998-2002

 

Age

Survival interviewees deceased (proxy interview)follow-up newly interview Total

M F T M F T M F T M F T

1998 baseline survey80-89 NA NA NA 1787 1741 3528 1787 1741 3528 NA NA NA90-99 NA NA NA 1299 1714 3013 1299 1714 3013 NA NA NA100+ NA NA NA 481 1937 2418 481 1937 2418 NA NA NATotal NA NA NA 3567 5392 8959 3567 5392 8959 NA NA NA2000 follow-up survey80-89 996 1048 2044 1471 1403 2874 2467 2451 4918 339 262 60190-99 720 907 1627 925 1260 2185 1645 2167 3812 574 612 1186100+ 262 891 1153 256 1022 1278 518 1913 2431 348 1213 1561Total 1978 2846 4824 2652 3685 6337 4630 6531 11161 1261 2087 33482002 follow-up survey35-65 NA NA NA 3132 1346 4478 3132 1346 4478 NA NA NA65-79 NA NA NA 2456 2438 4894 2456 2438 4894 NA NA NA80-89 1454 1411 2865 673 672 1345 2127 2083 4210 483 377 86090-99 948 1236 2184 590 858 1448 1538 2094 3632 547 679 1226100+ 277 917 1194 442 1685 2127 719 2602 3321 295 941 1236Total 2679 3564 6243 7293 6999 14292 9972 10563 20535 1325 1997 3322

NA -- Not applicable

(3) Sampling areas

-- The survey was conducted in the randomly selected half of the counties and cities of 22 provinces out of the total of 31 provinces where Han are majority.

 

-- The population in the survey areas constitutes about 85 percent of the total population in China.

PERSPECTIVE

1. General plan of our 2005 and 2008 follow-up surveys

2. Further in-depth data analysis to better understand the determinants of healthy longevity

Data Availability:The 1998 baseline and 2000, 2002 follow-up healthy longevity survey data sets are n

ow being distributed internationally by the Peking University Center for Healthy Aging and Family Studies (http://www.pku.edu.cn/academic/population/center/index.htm) and the program at Duke University (http://www.pubpol.duke.edu/centers/ppa/).

Contacts:Prof. Liu Yuzhi, Peking University; E-mail: chafs@pku.edu.cn or yuzhil@pku.edu.cnDr. Danan Gu, Duke University;E-mail: danan@aas.duke.edu