Table 4.
Independent sample t-test comparing group of patients with one antipsychotic versus patients with two or more antipsychotics
| T-test for equality of means | |||
|---|---|---|---|
| t | Sig (2-tailed) | 95% Confidence for the difference | |
| Lower - Upper | |||
| Age (n = 329) | 0.689 | 0.486 | -1.457 - 3.060 |
| Age at onset of psychosis (n = 140) | 0.795* | 0.429 | -1.583 - 3.692 |
| Duration (weeks) of untreated psychosis (n = 142) | 2.318* | 0.022 | 8.757 - 110.567 |
| GAF-S (n = 329) | 3.971 | 0.000 | 2.452 - 7.267 |
| GAF-F (n = 329) | 3.734 | 0.000 | 1.972 - 3.363 |
| PANSS-positive (n = 305) | -2.187 | 0.030 | -2.997 - -0.158 |
| PANSS negative (n = 307) | -3.297 | 0.001 | -4.239 - -1.070 |
| PANSS general (n = 304) | -1.916 | 0.056 | -4.195 - -0.056 |
| PANSS total (n = 302) | -3.133 | 0.002 | -10.821 - -2.471 |
| Number of previous admissions (n = 329) | -2.859* | 0.005 | - 3.323 - -0.606 |
| No. of previous admission dichotomized, (0 or 1 vs. 2 or more previous admissions) |
-3.189* | 0.002 | -0.284 - -0.067 |
* Equal variances not assumed due to Levene's Test for Equality of Variances, p < 0.05