Table 4.
Regression analysis
| Dependent variable | Variables included in the regression model | R2 | F | P |
|---|---|---|---|---|
| CIG (T2-T1) | PANSS general | 0.144 | 7.417 | 0.010 |
| TMA Test (T2-T1) | Biperiden | 0.089 | 4.711 | 0.036 |
| Stroop interference (T2-T1) |
PANSS negative | 0.089 | 4.241 | 0.048 |
| WCST total errors (T2-T1) |
Diazepam | 0.092 | 4.871 | 0.034 |
| Biperiden | 0.183 | 5.253 | 0.010 | |
| Digit Symbol (T2-T1) |
Biperiden | 0.130 | 6.666 | 0.014 |
| Digit Span Backwards (T2-T1) |
EMC | 0.092 | 4.830 | 0.034 |
| Finger-Tapping Test, Unimanual Right Motor Performance (T2-T1) | Biperiden | 0.157 | 8.057 | 0.007 |
CIG Test: Category Instant Generation Test; TMA Test: Trail Making Test, part A; WCST: Wisconsin Card Sorting Test; EMC: equivalents milligrams chlorpromazine.