Table 2.
Crude and Adjusted ORs and 95% CIs for Developing Psychiatric Disorders According to Premorbid IQ (scored 1–9; 1 = highest)
| OR (95% CI) |
||
| Crude | Adjusteda | |
| Psychoses | 1.28 (1.09, 1.51) | 1.29 (1.09, 1.52) |
| Neuroses | ||
| Depression | 1.08 (1.04, 1.12) | 1.06 (1.02, 1.11) |
| Other | 1.15 (1.13, 1.17) | 1.14 (1.12, 1.17) |
| All | 1.13 (1.11, 1.15) | 1.13 (1.10, 1.15) |
| Personality disorder | 1.29 (1.25, 1.33) | 1.26 (1.22, 1.30) |
| Alcoholism | 1.53 (1.42, 1.64) | 1.49 (1.38, 1.62) |
| Drug dependence | 1.16 (1.10, 1.23) | 1.08 (1.02, 1.15)b |
| Other diagnoses | 1.28 (1.24, 1.32) | 1.27 (1.23, 1.31) |
Note: OR, odds ratio; CI, confidence interval. All crude and all adjusted results are P < 0.001.
a
Adjusted for drug use, smoking, disturbed behavior, and place of upbringing.
b
Not adjusted for drug use.