Table 1.
Characteristics of the study population overall and by sex, N (%)
| Overall | Males | Females | |
|---|---|---|---|
| Male | 3 531 266 (51.1%) | 3 531 266 (100%) | – |
| Females | 3 376 593 (48.9%) | – | 3 376 593 (100%) |
| Foreign born | 626 671 (9.1%) | 315 723 (8.9%) | 310 948 (9.2%) |
| Parental schizophrenia | 30 103 (0.4%) | 15 590 (0.4%) | 14 513 (0.1%) |
| Other parental psychiatric disorder | 835 738 (12.1%) | 434 776 (12.3%) | 400 962 (11.9%) |
| Parental alcohol or substance use disorder | 639 845 (9.3%) | 329 495 (9.3%) | 310 350 (9.2%) |
| Cannabis use disorder | 60 563 (0.9%) | 45 322 (1.3%) | 15 241 (0.5%) |
| Alcohol use disorder | 398 430 (5.8%) | 265 578 (7.5%) | 132 852 (3.9%) |
| Other substance use disorder | 233 512 (3.4%) | 126 910 (3.6%) | 106 602 (3.2%) |
| Other psychiatric disorder | 869 274 (12.6%) | 397 389 (11.3%) | 471 885 (14.0%) |
Data source: the nationwide Danish registers, full-linkage of which is made possible through the unique identification number in the Civil Registration System.