Table 1.
Demographic variables and environmental exposures in cases and controls
| Total | Controls | Cases | Missing rates | |
|---|---|---|---|---|
| Age (years, mean±SD) | 32.4±9.8 | 33.4±10.6 | 31.5±9.0 | |
| Sex | ||||
| Male | 1,951 (60.2%) | 762 (49.4%) | 1,189 (70.0%) | |
| Female | 1,290 (39.8%) | 780 (50.6%) | 510 (30.0%) | |
| Cannabis use | ||||
| No | 2,390 (78.6%) | 1,366 (91.2%) | 1,024 (66.5%) | 202 (6.2%) |
| Yes | 649 (21.4%) | 132 (8.8%) | 517 (33.5%) | |
| Bullying | ||||
| No | 1,947 (72.3%) | 1,101 (83.7%) | 846 (61.4%) | 547 (16.9%) |
| Yes | 747 (27.7%) | 215 (16.3%) | 532 (38.6%) | |
| Emotional abuse | ||||
| No | 2,019 (73.0%) | 1,230 (84.8%) | 789 (60.0%) | 475 (14.7%) |
| Yes | 747 (27.0%) | 221 (15.2%) | 526 (40.0%) | |
| Physical abuse | ||||
| No | 2,477 (88.7%) | 1,362 (93.0%) | 1,115 (84.0%) | 450 (13.9%) |
| Yes | 314 (11.3%) | 102 (7.0%) | 212 (16.0%) | |
| Sexual abuse | ||||
| No | 2,269 (81.5%) | 1,309 (90.1%) | 960 (72.1%) | 456 (14.1%) |
| Yes | 516 (18.5%) | 144 (9.9%) | 372 (27.9%) | |
| Emotional neglect | ||||
| No | 1,254 (45.3%) | 789 (54.3%) | 465 (35.4%) | 473 (14.6%) |
| Yes | 1,514 (54.7%) | 664 (45.7%) | 850 (64.6%) | |
| Physical neglect | ||||
| No | 1,804 (64.8%) | 1039 (71.3%) | 765 (57.7%) | 457 (14.1%) |
| Yes | 980 (35.2%) | 419 (28.7%) | 561 (42.3%) | |
| Winter birth | ||||
| No | 1,989 (63.2%) | 951 (63.0%) | 1,038 (63.4%) | 94 (2.9%) |
| Yes | 1,158 (36.8%) | 559 (37.0%) | 599 (36.6%) | |
| Hearing impairment | ||||
| No | 2,869 (92.5%) | 1,437 (95.6%) | 1,432 (89.7%) | 141 (4.4%) |
| Yes | 231 (7.5%) | 66 (4.4%) | 165 (10.3%) |