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JGSS-2015

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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:300
No. of subjects at each survey point:14-16

Administration
JGSS-2015 was conducted from the beginning of February through May 2015. The fieldwork was entrusted to the Central Research Services Inc. (Chuo-Chosa-sha).
As for JGSS conducted before, JGSS-2015 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
1,867(89.8) 193(9.3) 19(0.9) 2,079(100.0)

 

Response Rate

No. of respondents contacted 4,500
No. of valid responses 2,079
No. of nonresponses or invalid responses 2,421(change of address:193、address unknown:45、death:14、long term absence:71、sickness:128、 in hospital:77、other:8)
Response Rate 52.4%

 

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 108
(11.3)
133
(14.0)
147
(15.4)
159
(16.7)
208
(21.8)
144
(15.1)
53
(5.6)
952
(100.0)
Femal 113
(10.0)
178
(15.8)
194
(17.2)
210
(18.6)
195
(17.3)
160
(14.2)
77
(6.8)
1,127
(100.0)
TTL 221
(10.6)
331
(15.0)
341
(16.4)
369
(17.7)
403
(19.4)
304
(14.6)
130
(6.3)
2,079
(100.0)
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