Table 1. Comparisons on demographic data, psychiatric symptoms, and WCST performance in euthymic bipolar patients between the US and Taiwan.
| US (n = 25) | Taiwan (n = 30) | |||
|---|---|---|---|---|
| Characteristics | Mean(SD) | Mean (SD) | t | p |
| Demographic | ||||
| Age (years) | 30.0(7.2) | 31.7(7.8) | -.84 | 0.41 |
| Education(years) | 13.7(2.2) | 13.6(2.6) | .23 | 0.82 |
| Number of children | 0.9(1.3) | 0.3(0.6) | 2.34 | <.025 |
| Months since last holding a job | 5.2(8.8) | 1.1(3.4) | 2.07 | <0.05 |
| Psychiatric symptom | ||||
| YMRS(score) | 3.0(3.2) | 1.2(2.1) | 2.40 | < 0.025 |
| HDRS(score) | 3.1(3.0) | 1.9(2.5) | 1.52 | 0.14 |
| Positive Symptom(score) | 0.5(0.8) | 0.0 (0.2) | 3.09 | <0.005 |
| WSCT performance | ||||
| Perseverative error (%) | 13.8(9.8) | 16.2(13.6) | -.71 | 0.48 |
| Perseverative response (n) | 17.7(17.5) | 19.4(20.2) | -.33 | 0.74 |
| Perseverative error (n) | 15.6(13.9) | 17.5(18.4) | -.43 | 0.67 |
| Non-perseverative error (n) | 13.8(14.3) | 15.9(15.9) | -.52 | 0.61 |
| Failure to maintain set (n) | 1.0(1.2) | 0.6(0.9) | 1.29 | 0.20 |
Degree of freedom= 53;