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Background
In response to the potential impacts on the economic, medical, family and social aspects of population aging, one of the former institutes of the Health Promotion Administration, the Institute of Family Planning, has started to plan studies on the elderly since 1987. The baseline survey of Taiwan Longitudinal Study on Aging , also known as TLSA, was conducted in 1989 on a national representation sample of adult residents aged 60 and above in non-aboriginal townships of Taiwan. The respondents were followed every three to four years. Two fresh samples were selected in 1996 and 2003 to maintain representativeness of the younger age cohort and to extend representativeness of the sample to the population aged 50 and above. A total of 7 surveys were conducted in 1989, 1993, 1996, 1999, 2003, 2007, and 2011 (Wave I –Wave VII) respectively.
Survival status and cause of death were obtained by linking the survey data to death certificate files managed by the Ministry of Health and Welfare

Specific Aims
The specific aims of this survey are:
1. To understand the health status and wellbeing of the middle aged and the elderly in Taiwan, including physical function, disability, illness, mental health, health behavior, health and preventative care utilization.
2. To understand the social status of the middle aged and the elderly in Taiwan, including family structure, living arrangements, social support, leisure activity, socioeconomic status, life attitudes, occupation and retirement, and awareness and utilization of elder welfare provided by the government.
3. To compare the differences of health and social status among subgroups of people characterized by their social economic background.
4. To explore the needs of the middle aged and the elderly on medical and preventive health care or the supports required for healthy living.

Sampling and Survey Method
Household registration data of residents aged 60 and above in non-aboriginal townships in 1988 were used as sampling frame for this study. A three-stage systematic random sampling method was used for the selection of an equal probability sample.
Two fresh samples were selected in 1996 and 2003 to maintain representativeness of the younger age cohort and to extend representativeness of the sample to the population aged 50 and above in Taiwan.
Data were collected with face-to-face interview questionnaires by trained interviewers.

Response Rate
In the seventh survey (2011), a total of 3,727 participants completed the interview achieving high response rates (88.3%).
Year
Cohort
Age at Survey
Respondents
Deceased
Non-response
Response rare*
1989
1
≧60
4,049
-
363
91.8%
1993
1
≧64
3,155
582
312
91.0%
1996
1
≧67
2,669
1,047
333
88.9%
2
50-66
2,462
9
570
81.2%
1999
1
≧70
2,310
1,486
253
90.1%
2
53-69
2,130
110
222
90.6%
1
≧74
1,743
2,133
173
91.0%
2003
2
57-73
2,035
253
174
92.1%
3
50-56
1,599
4
423
79.1%
1
≧78
1,268
2,661
120
91.4%
2007
2
61-77
1,864
410
188
90.8%
3
54-60
1,402
38
159
89.8%
1
≧82
804
41
116
87.4%
2011
2
65-81
1,616
16
183
89.8%
3
58-64
1,307
5
196
87.0%
*: Number of the deceased or withdrawn was excluded from the denominator of the response rate.

List of Collaborative institutions
1989 Wave I-- PSC, University of Michigan; Institute of Gerontology, University of Michigan; Taiwan Provincial Institute of Family Planning.
1993 Wave II-- PSC, University of Michigan ;Institute of Gerontology, University of Michigan; School of Public Health, Taiwan University; Taiwan Provincial Institute of Family Planning.
1996 Wave III-- PSC, University of Michigan; School of Public Health, Taiwan University; Taiwan Provincial Institute of Family Planning.
1999 Wave IV-- PSC, University of Michigan; Dept. of Demography, Georgetown University; Office of Population Research, Princeton University; National Institute of Family Planning.
2003 Wave V-- PSC, University of Michigan; Dept. of Demography, Georgetown University; Office of Population Research, Princeton University; Center for Population and Health Survey Research, Bureau of Health Promotion.
2007 Wave VI-- Dept. of Demography, Georgetown University; Office of Population Research, Princeton University; Center for Population and Health Survey Research, Bureau of Health Promotion.
2011 Wave VII-- Dept. of Demography, Georgetown University; Office of Population Research, Princeton University; Surveillance and Research Division, Health Promotion Administration.





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Attachment : QUESTIONNAIRE : 1989 Survey of Health and Living Status of the Elderly in Taiwan
Attachment : QUESTIONNAIRE : 1993 Survey of health and living status of the elderly in Taiwan
Attachment : QUESTIONNAIRE : 1996 Survey of Health and Living Status of the Middle Aged and Elderly in Taiwan ( Apply to Individual 50~66 years old)
Attachment : QUESTIONNAIRE : 1996 Survey of Health and Living Status of the Middle Aged and Elderly in Taiwan ( Apply to Individual over 67 years old)
Attachment : QUESTIONNAIRE : 1999 Survey of Health and Living Status of the Middle Aged and Elderly in Taiwan
Attachment : QUESTIONNAIRE : 2003 Survey of Health and Living Status the Middle Aged and Elderly in Taiwan (Apply to Individual 50~56 years old)
Attachment : QUESTIONNAIRE : 2003 Survey of Health and Living Status the Middle Aged and Elderly in Taiwan (Apply to Individual Over 57 years old)
Attachment : The Study on Health and Related Biomarkers of the Elderly in Taiwan (First Interview Questionnaire).pdf
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Modify Dete:2017/03/16 Publish Date:2017/01/08