Table 1.
Baseline characteristics of patients with psychotic disorders.
| Violent behavior |
||||
|---|---|---|---|---|
| Yes (n = 183) | No (n = 708) | Test statistic (df) | p | |
| Demographic characteristics | ||||
| Age, mean (SD) in years | 25.9 (6.3) | 27.6 (7.2) | t (889) = 2.9 | .004 |
| Male, n (%) | 145 (79) | 543 (77) | χ2 (1) = 0.53 | ns |
| Caucasian. n (%) | 137 (76) | 559 (80) | χ2 (8) = 9.66 | ns |
| Completed secondary education, n (%) | 146 (80) | 620 (88) | χ2 (1) = 8.17 | .004 |
| Clinical characteristics | ||||
| DSM-IV-TR diagnosis | χ2 (3) = 6.80 | ns | ||
| Schizophrenia, n (%) | 136 (74) | 479 (68) | ||
| Schizoaffective disorder, n (%) | 18 (10) | 90 (13) | ||
| Psychotic disorder NOS, n (%) | 18 (10) | 57 (8) | ||
| Other, n (%) | 11 (6) | 82 (12) | ||
| Age of onset, mean (SD) in years | 21.7 (5.6) | 23.4 (6.6) | t (889) = 3.37 | .001 |
| PANSS total score (SD) | 58.9 (17.1) | 53.5 (16.2) | t (809) = 3.80 | <.001 |
| Substance misuse, n (%) | 118 (68) | 405 (60) | χ2 (1) = 4.26 | .039 |
df, degrees of freedom; SD, standard deviation; ns, nonsignificant; DSM-IV-TR, Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision; NOS, not otherwise specified; PANSS, Positive and Negative Syndrome Scale.
Due to missing data, the total number of patients varies per characteristic.