Table 1.
Baseline Characteristics of the Study Sample (n = 979701)
| Diagnosis of Schizophrenia Spectrum disorder (n = 9656, 0.99%) | No Diagnosis of Schizophrenia Spectrum Disorder (n = 970045, 99.1%) | |||
|---|---|---|---|---|
| N | % | n | % | |
| Male | 5184 | 53.69 | 497610 | 51.30 |
| Parental psychiatric family history | ||||
| None | 6954 | 72.02 | 823582 | 84.90 |
| Any psychiatry | 2133 | 22.09 | 130574 | 13.46 |
| Schizophrenia spectrum disorder | 569 | 5.89 | 15889 | 1.64 |
| Highest attained educational level (years) | ||||
| Mother | ||||
| 9 | 4421 | 45.79 | 308021 | 31.75 |
| 10–12 | 2871 | 29.73 | 388830 | 40.08 |
| >12 | 1513 | 15.67 | 215004 | 22.16 |
| Missing | 851 | 8.81 | 58190 | 6.00 |
| Father | ||||
| 9 | 3484 | 36.08 | 243160 | 25.07 |
| 10–12 | 3934 | 40.74 | 476008 | 49.07 |
| >12 | 1314 | 13.61 | 185750 | 19.15 |
| Missing | 924 | 9.57 | 65127 | 6.71 |
| Exposed to childhood psychological trauma | 5060 | 52.40 | 339484 | 35.00 |