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JGSS-2010

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Sampling

Sample area Nationwide
Sample population Men and women 20-89 years of age living in Japan
Sample size 9,000
Sampling method Two-stage stratified random sampling;stratified by regional block and population size
No. of survey points:600
No. of subjects at each survey point:14-16

Administration
JGSS-2010 was conducted from the beginning of February through April 2010. The fieldwork was entrusted to the Central Research Services Inc. (Chuo-Chosa-sha).
As for JGSS conducted before, JGSS-2010 used both interview and placement (self-administered) method for each respondent. There were two forms of self-administered questionnaire: Form A and Form B. Form A mainly consists of replicating core questions and topical modules. Form B mainly consists of the EASS module. Form A was randomly distributed to a half of the sample, and Form B was distributed to the rest of the sample. 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
Form A 2,091(83.4) 380(15.2) 36(1.4) 2,507(100.0)
Form B 2,091(83.8) 366(14.7) 39(1.6) 2,496(100.0)
TTL 4,182(83.6) 746(14.9) 75(1.5) 5,003(100.0)

Response Rate

  Form A Form B
No. of respondents contacted 4,500 4,500
No. of valid responses 2,507 2,496
No. of nonresponses or invalid responses 1,993(change of address:168, address unknown:66, death:6, long term absence:72, sickness:77, in hospital:44, other:35) 2,004(change of address:163, address unknown:77, death:6, long term absence:71, sickness:84, in hospital:61, other:21)
Response Rate 62.18% 62.14%

Responses by Sex and Age:Form A

No. of Responses(%)
Age 20-29 30-39 40-49 50-59 60-69 70-79 80-89 TTL
Male 103
(9.0)
181
(15.8)
193
(16.8)
211
(18.4)
261
(22.8)
155
(13.5)
42
(3.7)
1,146
(100.0)
Female 134
(9.8)
219
(16.1)
273
(20.1)
240
(17.6)
275
(20.2)
160
(11.8)
60
(4.4)
1,361
(100.0)
TTL 237
(9.5)
400
(16.0)
466
(18.6)
451
(18.0)
536
(21.4)
315
(12.6)
102
(4.1)
2,507
(100.0)

Responses by Sex and Age:Form B

No. of Responses(%)
Age 20-29 30-39 40-49 50-59 60-69 70-79 80-89 TTL
Male 106
(9.2)
171
(14.8)
169
(14.6)
197
(17.1)
262
(22.7)
184
(15.9)
65
(5.6)
1,154
(100.0)
Female 130
(9.7)
210
(15.6)
234
(17.4)
231
(17.2)
278
(20.7)
186
(13.9)
73
(5.4)
1,342
(100.0)
TTL 236
(9.5)
381
(15.3)
403
(16.1)
428
(17.1)
540
(21.6)
370
(14.8)
138
(5.5)
2,496
(100.0)
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