Table 4.
Means, standard deviation (SD), and test-retest coefficients for the 3-factors PANSS subscales (positive, negative, and general) and the total scale (n = 159 × 5 occasions).
| Scale/assessment | Baseline | 6 Months | 12 Months | 18 Months | 24 Months |
|---|---|---|---|---|---|
| PANSS Total | |||||
| Mean (SD) | 48.35**(11.50) | 42.57**(9.70) | 51.75**(8.76) | 42.62**(8.16) | 42.01**(8.70) |
| Test-retest (r)a | -- | 0.66 | 0.51 | 0.46 | 0.38 |
| PANSS Positive | |||||
| Mean (SD) | 10.71**(2.75) | 9.57**(2.6) | 9.01**(2.03) | 9.03**(2.38) | 9.35**(2.53) |
| Test-retest (r)a | -- | 0.57 | 0.35 | 0.38 | 0.31 |
| PANSS Negative | |||||
| Mean (SD) | 12.16**(4.17) | 11.15**(3.66) | 11.14**(3.47) | 10.19**(2.90) | 10.67**(3.07) |
| Test-retest (r)a | -- | 0.58 | 0.37 | 0.38 | 0.36 |
| PANSS General | |||||
| Mean (SD) | 25.48**(6.93) | 21.86**(5.6) | 21.60**(5.14) | 21.40**(4.84) | 21.99**(5.23) |
| Test-retest (r)a | -- | 0.66 | 0.57 | 0.50 | 0.41 |
aTest-retest bivariate correlations between assessments and the baseline.
Note: **p < 0.01. Mean difference is significant compared to the baseline.