Table 2.
Comparison of patients with schizophrenia and controls in WCST, the KBS Korean Language Test and K-UPSA in which the effect of estimated IQ was controlled
| Variable | Schizophrenic (n=86) | Control (n=29) | F value | p value |
|---|---|---|---|---|
| WCST | ||||
| PR | 39.37±26.75 | 24.88±17.03 | 3.82 | 0.054 |
| PE | 32.47±19.52 | 21.25±12.88 | 4.51 | 0.037 |
| CA | 1.49±1.88 | 3.88±2.33 | 12.30 | 0.001 |
| KBS Korean Language Test | ||||
| Listening comprehension | 4.77±2.70 | 8.50±0.97 | 9.42 | 0.003 |
| Reading comprehension | 4.55±2.72 | 9.40±1.07 | 16.63 | <0.001 |
| Creativity | 3.38±2.61 | 8.80±1.03 | 28.61 | <0.001 |
| Total score | 12.70±6.99 | 26.70±1.57 | 23.67 | <0.001 |
| K-UPSA | ||||
| Financial | 15.86±3.86 | 19.68±0.71 | 4.71 | 0.032 |
| Communication | 10.68±4.36 | 16.73±1.60 | 19.45 | <0.001 |
| Comprehension/planning | 9.42±4.23 | 16.02±2.94 | 26.62 | <0.001 |
| Transportation | 13.98±4.76 | 19.52±1.11 | 9.85 | <0.001 |
| Household skills | 15.76±6.88 | 19.82±0.94 | 2.01 | <0.001 |
| Total score | 65.69±17.48 | 91.77±3.98 | 20.25 | <0.001 |
Values are presented as mean±standard deviation.
WCST, Wisconsin Card Sorting Test; PR, Perseverative Responses; PE, Perseverative Errors; CA, Numbers of Categories Achieved; KBS Korean Language Test, Korean Broadcasting System Korean Language Test; K-UPSA, Korean version of the University of California San Diego (UCSD) Performance-based Skills Assessment.