Table 1.
Demographic characteristics of patients with SZ and HCs.
| SZ (N = 33) | HC (N = 30) | p | |
|---|---|---|---|
| Age (years) | 42.21 ± 10.99 | 43.33 ± 12.95 | 0.711 |
| Sex | |||
| Male | 16 (48.5) | 13 (43.3) | 0.682 |
| Female | 17 (51.5) | 17 (56.7) | |
| Premorbid IQ | 103.03 ± 9.86 | 107.85 ± 9.34 | 0.059 |
| Education (years) | 13.85 ± 2.06 | 13.87 ± 3.81 | 0.982 |
| Number of hospitalization | 2.82 ± 3.30 | ||
| Duration of illness (years) | 13.57 ± 8.90 | ||
| Onset age (years) | 27.83 ± 9.83 | ||
| Dosage of antipsychotics (chlorpromazine equivalent, mg) | 495.06 ± 558.53 | ||
| Positive and negative syndrome scale | |||
| Positive | 13.06 ± 6.57 | ||
| Negative | 16.45 ± 6.19 | ||
| General | 29.61 ± 8.30 | ||
| Total | 59.12 ± 18.93 | ||
| TMT-A (seconds) | 31.28 ± 13.35 | 28.38 ± 10.24 | 0.351 |
| TMT-B (seconds) | 107.47 ± 53.55 | 84.97 ± 50.40 | 0.108 |
| Verbal fluency | 15.91 ± 4.84 | 19.00 ± 5.82 | 0.027 |
| K-AVLT – delayed recall | 6.31 ± 3.65 | 9.89 ± 2.08 | < 0.001 |
| SFQ | 44.88 ± 11.96 | 40.14 ± 7.77 | 0.066 |
| SOFAS | 63.73 ± 13.59 |
HC, healthy control; IQ, intelligence quotient; K-AVLT, Korean Auditory Verbal Learning Test; SFQ, Social Functioning Questionnaire; SOFAS, Social and Occupational Functioning Assessment Scale; SZ, schizophrenia; TMT-A, Trail Making Test-A; TMT-B, Trail Making Test-B.