University of Tokyo

Abstract
Survey Number 0395
Survey Title National Survey of the Japanese Elderly <Wave1(1987), Wave2(1990), Wave3(1993)>
Depositor Tokyo Metropolitan Institute of Gerontology
Restriction of Use For detailed information, please refer to 'For Data Users' at SSJDA website.

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Educational Purpose Available for both research and educational purposes.
Data use permit period One year
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Summary This research was initiated in 1986 as a collaborative project of Tokyo Metropolitan Institute of Gerontology and the University of Michigan. In 1987, the first survey was done for the men and women aged 60 and over in nationwide, who were extracted by two-stage stratified random sampling. The follow-up survey has being executed every three years afterwards.

This study explores various aspects in respect of the resources and the life situations among the elderly, such as physical/mental health, family/social relationships, and economic status.

The change in the resources and the life situations among the elderly, and the factors may impact the change, can be analyzed by adopting the longitudinal research design. Furthermore, a part of the question items of this research is compatible with Americans' Changing Lives (ACL) survey (1986,1989); Survey Research Center (Institute for Social Research) of the Michigan University.

This project is in progress as of 2005, which completed six surveys (Wave1-Wave6) by 2002. The data deposited this time comes from the surveys 1987, 1990, and 1993 (Wave1-Wave3).

The first investigation in 1987 is a national probability survey 2,200 Japanese aged 60 and over, and the follow-up survey is in 1990 and in 1993. It replenished with the sample of 60-62 years old in 1990, and this data is included.
Though a random prove was implemented to examine the validity of the question items in 1990, its data is not included in this deposit.

In the following, the under mentioned name is used.
・survey in 1987: The 1st survey, Wave1 (W1)
・survey in 1990: The 1st follow-up survey, Wave2 (W2)
・survey in 1993: The 2nd follow-up survey, Wave3 (W3)
Universe
Unit of Observation Individual
Sample Size response (valid) agent responses response rate response rate (excepting the death)
[the 1st survey (W1)]
regular sumple 2,700 1,832
preliminary sumple 588 368
total 3,288 2,200 - 66.9% 67.2%

[the 1st follow-up survey (W2)]
panel sample 2,200 1,671 152 76.0% 82.0%
(including the agent) (1,823) (82.9%) (89.5%)
replenished sample 580 366 38 63.1% 63.3%
(including the agent) (404) (69.7%) (69.9%)
total 2,780 2,037 190 73.3%
(including the agent) (2,227) (80.1%)

[the 2nd follow-up survey (W3)]
total 2,441 1,864 197 76.4% 83.6%
(including the agent) (2,061) (84.4%) (92.5%)

※The number of respondent (the agent is not included) who answered each survey through W1-W3 are 1,369.
Time Period [The 1st survey (W1)] NOV 1987
[The 1st follow-up survey (W2)] SEP 1990
[The 2nd follow-up survey (W3)] OCT 1993
Spatial Unit All over the Japan
Sampling Procedure [The 1st survey (W1)] Two-stage stratified random sampling
The first unit of the sampling was stratified by the population size and the geographic position using the census tract in 1985, and 192 sampling points were extracted in proportion to population of 60 years old or more. The second unit of the sampling was an individual, and 2,700 people were extracted as a regular sample by using the basic resident register with the systematic random sampling. 1,522 people for the preliminary sample were also extracted.

[The 1st follow-up survey (W2)]
This sample is consisted of 2,200 repondents in the 1st survey (W1) and the replenished sample of 60-62 years old in 1990. The replenishment is 580 people who were extracted with the equal sampling probability to the panel of 63 years old or more.

[The 2nd follow-up survey (W3)]
The total of sample is 2,441 people, which are composed of 2,037 repondents in W1 except 163 deaths, and 404 respondents of the replenished sample (including the agent).
Mode of Data Collection [The 1st survey (W1)] It was implemented by home visit face-to-face interview with a quetionnaire. This subject is 2,700 regular sample and 588 pleliminary sample.

[The 1st follow-up survey (W2)]The home visit face-to-face interview with a quetionnaire was conducted. The agent gave the information such as education, work stuation, physical health about the subject, in case of the subject is not able to respond to a questionnaire because of the sickness and the poor cognition.

[The 2nd follow-up survey (W3)]The home visit face-to-face interview with a quetionnaire was implemented. The agent reponded only when the subject was in sever sick or the long-term absence.
Investigator ・Tokyo Metropolitan Institute of Gerontology
・the University of Michigan
・The fieldwork was entrusted to the Central Research Service Inc.
Sponsors(Funds)
Reports and Articles at Data Deposit (1) "Tokyo Metroporitan Institute of Gerontology- the University of Michigan. A national panel survey of the elderly. wave1(1987)-wave3(1993). Codebook." Tokyo Metroporitan Institute of Gerontology, the University of Michigan.
*This report is an extract (a partial amendment) from Chapter 2 "Research object and method" of the following report (2).

(2) "Longitudinal and cross-cultural study of life and health amon the elderly." Report of short-term project, 1999, Tokyo Metropolitan Institute of Gerontology.

(3) "Dynamics of healthy, family, and economic well-being among the Japanese old-old."Report of short-term project, 2002, Tokyo Metropolitan Institute of Gerontology.
Publications by Secondary Analysis through SSJDA Published outputs using this data.
Documentation [[Questionnaire on 1987][Questionnaire on 1990][Questionnaire on 1993]
Major Survey Items (1) Basic attribute
(2) Work status
(3) Family status
(4) Social relations other than family
-friends, group participation (social integration)
-social support
(5)Physical health
(6)Health behavior
(7)Mental health, subjective well-being
-dimensions of satisfaction (e.g., job satisfaction, family satisfaction)
(8)Economic status
(9)Others
-life event
-locus of control
-social desirability
-family norms
Date of SSJDA Release 2006/01/25
Version 2005/01/25
Topics Health/Medical Care
Society/Culture
Notes for User Details regarding how to acknowledge the data source can be also found in the "Readme" file sent along with the data.