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JGSS-2005

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Sampling

Sample area Nationwide
Sample population Men and women 20-89 years of age living in Japan
Sample size 4,500
Sampling method Two-stage stratified random sampling; stratified by regional block and population size
No. of survey points:307
No. of subjects at each survey point:15

Administration

JGSS-2005 was conducted from late August through the beginning of November 2005. The fieldwork was entrusted to the Central Research Services Inc. (Chuo-Chosa-sha).
As for JGSS conducted before, JGSS-2005 used both interview and placement (self-administered) method for each respondent. For practical reasons the administrative order (i.e., whether to conduct the face-to-face interview before or after the questionnaire) was determined by the interviewer/administrator depending on the circumstances of each case. In any case the administrative order was recorded for each respondent.

No. of Responses(%)
Interview >>>
Self-administered
Self-administered >>>
Interview
No answer TTL
1,688(83.4) 284(14.0) 51(2.5) 2,023(100.0)

The supplement samples were used only when the sample was unavailable due to either "death," "change of address," or "address unknown".

Response Rate

No. of respondents contacted 4,500
No. of valid responses 2,023
No. of nonresponses or invalid responses 2,477(change of address:190, address unknown:79, death:11, long term absence:53, sickness:96, in hospital:54, other:15)
Response Rate 50.5%

Responses by Sex and Age

No. of Responses(%)
Age 20-29 30-39 40-49 50-59 60-69 70-79 80-89 TTL
Male 90
(9.8)
125
(13.6)
136
(14.8)
187
(20.3)
206
(22.4)
137
(14.9)
39
(4.2)
920
(100.0)
Female 132
(12.0)
167
(15.1)
168
(15.2)
214
(19.4)
224
(20.3)
146
(13.2)
52
(4.7)
1,103
(100.0)
TTL 222
(11.0)
292
(14.4)
304
(15.0)
401
(19.8)
430
(21.3)
283
(14.0)
91
(4.5)
2,023
(100.0)
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