Table 3.
Correlations of executive functions with age, duration of illness, neuropsychological performance and PANSS
| I | II | III | IV | Total | |
|---|---|---|---|---|---|
| Age | −0.29 | −0.12 | −0.27 | −0.19 | −0.25 |
| Duration of illness | −0.26 | −0.22 | −0.24 | −0.01 | −0.21 |
| Trail-making test | |||||
| I | −0.51*** | −0.24 | −0.59*** | −0.47*** | −0.53*** |
| II | −0.44** | −0.39* | −0.41* | −0.46*** | −0.50*** |
| Raven test | |||||
| Score | 0.58*** | 0.49*** | 0.54*** | 0.74*** | 0.69*** |
| Time | 0.38* | −0.04 | 0.21 | 0.37* | 0.25 |
| Fluency | |||||
| Linguistic | |||||
| I | 0.40* | 0.33 | 0.62*** | 0.44** | 0.53*** |
| II | 0.15 | 0.51*** | 0.42** | 0.21 | 0.40* |
| Category | |||||
| I | 0.47*** | 0.53*** | 0.65*** | 0.55*** | 0.66*** |
| II | 0.31 | 0.46*** | 0.68*** | 0.51*** | 0.59*** |
| PANSS | |||||
| Positive symptoms | −0.18 | 0.16 | 0.26 | 0.04 | 0.11 |
| Negative symptoms | −0.00 | −0.01 | −0.06 | −0.09 | −0.05 |
| General psychopathology | −0.22 | −0.14 | 0.10 | −0.30 | −0.15 |
| Anergia | −0.07 | −0.05 | −0.03 | −0.20 | −0.15 |
| Thought disorder | −0.15 | 0.17 | 0.19 | −0.05 | 0.07 |
| Activation | 0 | −0.05 | 0.33 | −0.06 | 0.07 |
| Belligerence | −0.22 | 0.02 | 0.36* | 0.14 | 0.11 |
| Depression | −0.20 | −0.15 | 0.07 | −0.29 | −0.16 |
*
p<0.05;
**
p<0.02;
***
p<0.01
Degrees of freedom (df) = 29
PANSS: Positive and Negative Syndrome Scale