Table 1.
Characteristics of study participants.
| Characteristic | Participants of wave 1 |
Wave 1 participants Follow-ups |
|---|---|---|
| N = 3090 | N = 2163 | |
| Female | 1,509 (48.8%) | 990 (45.8%) |
| Age (mean ±SD) | 44.9 ± 10.9 | 46 ± 10.7 |
| Marital status | ||
| Married | 1,466 (47.4%) | 1,038 (48.0%) |
| Personal yearly income (Japanese yen)a | ||
| 0–1,999,999 | 1,460 (54.3%) | 1,019 (49.7%) |
| 2,000,000–3,999,999 | 572 (21.3%) | 420 (20.5%) |
| 4,000,000–5,999,999 | 320 (11.9%) | 237 (11.6%) |
| 6,000,000–7,999,999 | 197 (7.3%) | 140 (6.8%) |
| 8,000,000–9,999,999 | 80 (3.0%) | 60 (2.9%) |
| Over 10,000,000 | 40 (1.5%) | 36 (1.7%) |
| Hx of physical abuse | 1,222 (39.6%) | 818 (37.8%) |
| Hx of emotional abuse | 1,875 (60.7%) | 1,284 (59.4%) |
| Hx of self-harm behavior | 778 (25.2%) | 539 (24.9%) |
| Psychiatric comorbidities diagnosed and treated in medical settings | ||
| MDD | 1,630 (52.8%) | 1,159 (53.6%) |
| Bipolar disorder | 335 (10.8%) | 232 (10.7%) |
| Dysthymic disorder | 341 (11.0%) | 234 (10.8%) |
| SAD | 489 (15.8%) | 350 (16.2%) |
| GAD | 487 (15.8%) | 350 (16.2%) |
| Panic disorder | 630 (20.4%) | 434 (20.0%) |
| OCD | 471 (15.2%) | 332 (15.4%) |
| PTSD | 422 (13.7%) | 289 (13.4%) |
| Psychosis | 321 (10.4%) | 210 (9.7%) |
| Eating disorder | 293 (9.5%) | 202 (9.3%) |
| SIDAS score at Time 1 | 20.0 +/– 9.7 | 19.8 +/– 9.5 |
| SIDAS score at Time 2 | 19.6 +/– 9.1 | |
a
1 Japanese yen is approximately equal to 0.0074 US dollar.
SD, standard deviation; MDD, major depressive disorder; SAD, seasonal affective disorder; GAD, generalized anxiety disorder; OCD, obsessive compulsive disorder; PTSD, post-traumatic stress disorder; SIDAS, suicidal ideation attributes scale.