Table 2.
Prevalence of Post-Traumatic Stress Disorder in Schizophrenia
| Study | Sample | Criteria | N | Prevalence | Notes |
| Strakowski et al66 | First-episode psychosis | SCID DSM-III-R | 18 | 22% | |
| Lyons et al32 | Affected co-twins | 24 | 16.7% | ||
| Kennedy et al51 | Outpatients | DSM-IV/Penn PTSD Inventory | 30 | 23.3% | |
| Kilcommons and Morrison58 | Outpatient sample of convenience | DSM-IV | 32 | 53% | |
| Tibbo et al36 | Outpatients | MINI DSM-IV | 32 | 0% | |
| McGorry et al. (2001) | Inpatients followed for one year | DSM-III | 36 | 46% 35% |
At 4 months At 11 months |
| Shaw et al. (1997) | Inpatients | CIDI/CAPS | 42 | 52.4% | |
| Meyer et al. (1999) | Inpatients | CAPS | 46 | 11% | |
| Resnick et al. (2003) | Outpatients | CAPS | 47 | 13% | |
| Braga et al39 | Outpatients | SCID DSM-IV | 53 | 3.8% | |
| Gearon et al. (2003) | Outpatient females, comorbid substance use disorder | DSM-IV | 54 | 46% | |
| Frame & Morrison (2001) | Inpatients | DSM-IV/ Davidson checklist |
60 | 67% | At discharge |
| Seedat et al65 | Inpatients | MINI | 70 | 4.3% | |
| Pallanti et al34 | Outpatients | SCID DSM-IV | 80 | 1.3% | |
| Fan et al. (2008) | Outpatients | DSM-IV | 87 | 17% | All with trauma history |
| Mueser et al. (1998) | Multicenter inpatients and outpatients | Chart records | 94 | 30.9% | |
| Priebe et al. (1998) | Outpatients | DSM-III-R | 105 | 51% | |
| Calhoun et al. (2007) | Inpatient male veterans | SCID/PTSD checklist | 165 | 47% | |
| Neria et al. (2002) | Inpatients with first-episode psychosis | DSM-III-R | 170 | 10.0% | |
| Mueser et al. (2004) | Multicenter inpatients and outpatients | PTSD checklist | 526 | 31.6% |
CAPS = Clinician-Administered PTSD Scale
CIDI = Composite International Diagnostic Interview
MINI = Mini International Neuropsychiatric Interview