Table 1.
Demographic and clinical characteristics of matched groupsa of first-episode patients with psychotic disorders and healthy controls
| Schizophrenia Spectrum (N = 24) | Psychotic Bipolar Disorder (N = 13) | Healthy Controls (N = 20) | |
|---|---|---|---|
| Age (SD), [Years] | 24.2 (7.5) | 23.9 (8.9) | 24.3 (4.7) |
| IQ (SD) [from WASI*] | 92.4 (18.3) | 95.2 (19.1) | 100.3 (9.6) |
| Gender (female/male) | 6/18 | 5/8 | 10/10 |
| Handedness (right/left/ambiguous) | 21/3/0 | 13/0/0 | 17/2/1 |
| Positive Symptoms score (SD) from PANSS** | |||
| Baseline | 23.5 (4.0) | 23.4 (4.1) | N/A |
| 4-week follow-up | 16.3 (4.4) | 16.9 (5.5) | |
| Negative Symptoms score (SD) from PANSS** | |||
| Baselineb | 19.3 (6.0) | 13.7 (5.8) | N/A |
| 4-week follow-up | 16.3 (6.0) | 11.4 (2.5) | |
a
ANOVA results for age: Fgroup(2,54) = 0.012, p=0.99, IQ: Fgroup(2,51) = 1.23, p=0.30
Differences between patient groups:
b
t(1,34) 7.45, p=0.01
*
WASI - Wechsler Abbreviated Scale of Intelligence (The Psychological Corporation 1999)
**
PANSS - Positive and Negative Syndrome Scale (Kay et al. 1989)