Clinical characteristics and neuropsychologic measures in patients with schizophrenia and healthy controls
| Group; mean (SD)* | ||||
|---|---|---|---|---|
| Characteristic or measure | Schizophrenia, n = 36 | Control, n = 28 | Statistic | p value |
| Age, yr | 27.6 (7.4) | 30.7 (8.0) | ||
| Sex, male:female | 20:16 | 15:13 | χ12 = 0.025 | 0.87 |
| Education, yr | 12.0 (1.6) | 12.2 (1.3) | t62 = 0.659 | 0.51 |
| Duration of illness, mo | 42.9 (61.0) | — | — | — |
| Positive and Negative Syndrome Scale (21) score | ||||
| Sum | 59.3 (13.7) | — | — | — |
| Positive scale | 11.6 (4.1) | — | — | — |
| Negative scale | 16.0 (4.7) | — | — | — |
| General psychopathology scale | 31.4 (8.4) | — | — | — |
| WAIS-R vocabulary, percentile rank | 62.6 (32.1) | 72.3 (21.5) | t62 = 1.373 | 0.18 |
| Auditory Verbal Learning Test (23) score | ||||
| Immediate recall | 45.4 (9.8) | 56.5 (7.9) | t62 = 4.870 | 0.001 |
| Delayed recall | 8.8 (3.0) | 11.7 (2.1) | t62 = 4.389 | 0.001 |
| Recognition | 11.3 (3.4) | 13.3 (3.0) | t62 = 2.443 | 0.001 |
| Trail Making Test A, (24) s | 36.5 (12.1) | 26.9 (8.1) | t62 = −3.556 | 0.001 |
| Trail Making Test B, (24) s | 78.7 (30.8) | 54.2 (17.3) | t62 = −3.708 | 0.001 |
SD = standard deviation; WAIS-R = Wechsler Adult Intelligence Scale. (22)
↵* Unless otherwise indicated.