Table 5 Comparison of sociodemographic, health-related behaviors, and suicidality between respondents who completed the wave 1 and 3 surveys (n = 2787) and those who completed the wave 1 survey but did not the wave 3 survey (n = 1570)
Response to wave 3 | Attrition | t / χ2 | P value | |||
|---|---|---|---|---|---|---|
N (%) | Mean (SD) | N (%) | Mean (SD) | |||
Age (mean) | 38.08 (7.0) | 36.0 (7.3) | 9.28 | < 0.01** | ||
Sex (men) | 1233 (44.2) | 810 (50.7) | 16.97 | < 0.01** | ||
Married (yes) | 2087 (75.0) | 955 (60.0) | 107.86 | < 0.01** | ||
Education | 8.76 | 0.03* | ||||
 Junior high school | 83 (3.0) | 66 (4.2) | ||||
 High school | 555 (20.2) | 313 (20.0) | ||||
 Some college | 958 (34.8) | 491 (31.4) | ||||
 University or higher | 1158 (42.0) | 692 (44.3) | ||||
Employment | 10.66 | < 0.01** | ||||
 Working | 2153 (77.6) | 1283 (80.7) | ||||
 On leave | 64 (2.3) | 47 (3.0) | ||||
 Job seeking or House wife or Students | 559 (20.1) | 260 (16.4) | ||||
Household Income (per year) | 76.03 | < 0.01** | ||||
 ≦2.5 million yen | 194 (7.0) | 113 (7.1) | ||||
 ≦5 million yen | 433 (15.5) | 251 (15.7) | ||||
 ≦7.5 million yen | 636 (22.8) | 272 (17.0) | ||||
 >7.5 million yen | 882 (31.6) | 413 (25.8) | ||||
 Not known | 642 (23.0) | 549 (34.4) | ||||
 Current or ever smoking (yes) | 1258(45.2) | 788 (49.4) | 7.35 | < 0.01** | ||
Drinking alcohol | 1.08 | 0.30 | ||||
 More than 3 times per week | 938 (33.7) | 514 (32.2) | ||||
 Less than 3 times per week | 1842(66.3) | 1082 (67.8) | ||||
 Economic status at age 15 (poor) | 523 (18.9) | 291 (18.2) | 0.39 | 0.83 | ||
Suicidality | ||||||
 Suicidal ideation over a lifetime (yes) | 509 (18.4) | 287 (18.3) | 0.01 | 0.92 | ||
 Suicidal ideation in the most recent year (yes) | 144 (5.2) | 84 (5.4) | 0.05 | 0.83 | ||
 Suicidal planning over a lifetime (yes) | 159 (5.8) | 98 (6.9) | 0.46 | 0.50 | ||
 Suicidal planning in the most recent year (yes) | 45 (1.6) | 34 (2.2) | 1.65 | 0.20 | ||
 Suicide attempt over a lifetime (yes) | 116 (4.2) | 88 (5.6) | 4.50 | 0.03* | ||
 Suicide attempt in the most recent year (yes) | 19 (0.7) | 19 (1.2) | 3.17 | 0.08 | ||