Summary of case–control study of head injury and schizophrenia, by Wilcox and Nasrallah18
| Exposed (HI+) | Not exposed (HI-) | OR (95% CI) | |
|---|---|---|---|
| CI, confidence interval; HI, head injury; OR, odds ratio. | |||
| Schizophrenia | 22 | 178 | 16.6 (2.6 to 689) |
| Bipolars | 6 | 116 | 6.9 (0.8 to 321) |
| Depressives | 3 | 203 | 2.0 (0.2 to 105) |
| Surgical controls | 1 | 134 | 1 (reference group) |