Table 1.
Demographics of schizophrenia patients and healthy control subjects.
| Characteristics | SZ (N = 203) | HC (N = 201) | t/χ2 | p value |
|---|---|---|---|---|
| Age, mean (SD), year | 31.897±9.139 | 31.294±8.703 | 0.677 | 0.499 |
| Sex, male/female | 108/96 | 105/97 | 0.038 | 0.846 |
| Educational level | 47.065 | < 0.001 | ||
| (Unfinished) primary school | 20 | 7 | ||
| Middle school | 32 | 73 | ||
| High school | 46 | 53 | ||
| Junior college | 60 | 27 | ||
| University | 45 | 29 | ||
| Postgraduate | 11 | 1 | ||
| Duration of illness, mean ± SD, year | 7.029±6.227 (n = 203) a | |||
| PANSS scores, mean ± SD | ||||
| Total score | 92.683±13.825 (n = 162) | |||
| Positive symptoms | 24.469±6.240 (n = 162) | |||
| Negative symptoms | 25.080±5.999 (n = 162) | |||
| General psychopathology symptoms | 43.025±8.558 (n = 162) | |||
| MCCB scores, mean ± SD | ||||
| Trail Making, Part A | 69.096±36.472 (n = 188) | |||
| BACS symbol coding | 37.946±13.121 (n = 186) | |||
| Category fluency | 14.982±6.265 (n = 188) | |||
| HVLT-R | 16.218±6.552 (n = 189) | |||
| WMS-III spatial span | 11.550±3.734 (n = 182) | |||
| NAB mazes | 8.473±6.486 (n = 182) | |||
| BVMT-R | 16.945±10.395 (n = 188) | |||
| CPT-IP | 1.348±0.772 (n = 169) |
Note: PANSS = Positive and Negative Syndrome Scale; SD = standard deviation; MCCB = MATRICS Consensus Cognitive Battery; BACS = Brief Assessment of Cognition in Schizophrenia; WMS-III = Wechsler Memory Scale, Third Edition; NAB = Neuropsychological Assessment Battery; HVLT-R = Hopkins Verbal Learning Test-Revised; BVMT-R = Brief Visuospatial Memory Test-Revised; CPT-IP = Continuous Performance Test-Identical Pairs. a Different n are due to missing values on one or more tests for some subjects.