Table 7. Associations of psychotic illness with time to non-violent reoffending.
| Baseline model: adjusted for demographya | Further adjustments for treatments for alcohol and drug dependence | Further adjustments for drug dependence diagnosis | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| n (%) | HR | 95% CI | P | HR | 95% CI | P | %b | HR | 95% CI | P | %b | |
| Previous schizophrenia | 49 (2.9) | 1.41 | 0.98–2.04 | 0.065 | – | – | – | – | – | – | – | – |
| Current schizophrenia | 116 (6.8) | 1.35 | 1.05–1.73 | 0.018 | – | – | – | – | 1.26 | 0.98–1.62 | 0.068 | 22 |
| Previous delusional disorder | 21 (1.2) | 1.21 | 0.71–2.07 | 0.477 | – | – | – | – | – | – | – | |
| Current delusional disorder | 29 (1.7) | 0.92 | 0.55–1.53 | 0.737 | – | – | – | – | – | – | – | |
| Previous drug-induced psychosis | 153 (8.9) | 1.61 | 1.33–1.96 | <0.001 | 1.39 | 1.14–1.70 | 0.001 | 31 | 1.20 | 0.98–1.47 | 0.076 | 62 |
| Current drug-induced psychosis | 50 (2.9) | 1.50 | 1.07–2.09 | 0.018 | 1.35 | 0.96–1.90 | 0.080 | 25 | – | – | – | – |
a
Method: Cox regression. Adjusted for age (in years), gender, marital status, ethnicity and socioeconomic status. Also adjusted for comorbid depression. Further adjustment for violent offending.
b
Percentage change in beta coefficient (beta=log (hazard ratio, HR) from baseline model to final adjusted model. Reported results when % change in beta coefficient increased compared with previous step.
Values in bold are significant.