Table 3.
Psychiatric illness among cases and controls and associated clogit ORs and 95% CIs
| Characteristics | Case | Control | OR* | 95% CI | ||
| n | % | n | % | |||
| Learning disability | ||||||
| No | 479 | 99.0 | 482 | 99.6 | 1 | |
| Yes | 5 | 1.0 | 2 | 0.4 | 1.24 | 0.85 to 1.79 |
| Anxiety/Depression | ||||||
| No | 419 | 86.6 | 425 | 87.8 | 1 | |
| Yes | 65 | 13.4 | 59 | 12.2 | 1.13 | 0.76 to 1.70 |
| Schizophrenia | ||||||
| No | 480 | 99.2 | 479 | 99.0 | 1 | |
| Yes | 4 | 0.8 | 5 | 1.0 | 0.80 | 0.22 to 2.98 |
| Other psychiatric disorder | ||||||
| No | 470 | 97.1 | 480 | 99.2 | 1 | |
| Yes | 14 | 2.9 | 4 | 0.8 | 3.50 | 1.15 to 10.63 |
*Conditional logistic regression ORs for cases and controls matched on age, sex and year diagnosis.