Table 1.
Demographic and working characteristics of study subjects.
| Variable | n (%) |
|---|---|
| Depressive symptoms | |
| Yes (CES-D ≥ 16) | 1216 (62.8%) |
| No (CES-D < 16) | 720 (37.2%) |
| Age (years) | |
| ≤30 | 382 (19.7%) |
| 31–40 | 417 (21.5%) |
| 41–50 | 942 (48.7%) |
| >50 | 195 (10.1%) |
| Marital status | |
| Single/divorced/widowed/separated | 329 (17.0%) |
| Married/cohabiting | 1607 (83.0%) |
| Education | |
| Junior high school or under | 972 (50.2%) |
| Senior high school/technical secondary school | 711 (36.7%) |
| Junior college or above | 253 (13.1%) |
| Chronic disease | |
| Yes | 711 (36.7%) |
| No | 1225 (63.3%) |
| Job rank | |
| Head miner | 394 (20.4%) |
| Staff miner | 1542 (79.6%) |
| Monthly income (RMB, yuan) | |
| ≤3000 | 451 (23.3%) |
| 3001–5000 | 1129 (58.3%) |
| >5000 | 356 (18.4%) |
| Weekly working time (hours) | |
| ≤40 | 519 (26.8%) |
| >40 | 1417 (73.2%) |
CES-D: the Center for Epidemiologic Studies Depression Scale.