Symptom Rating Scales
Psychotic symptoms, as measured by the PANSS over the study period, are shown in Figure 3. Baseline scores on the PANSS and the CGI severity measure and their changes over time are presented in Tables 1 and 3. There were no significant differences at baseline among the three groups in the total score or subscores of the PANSS or the CGI severity rating. By the end of the study, changes in the PANSS total score and the scores on its subscales for positive symptoms, negative symptoms, and excitement-hostility became significant (p≤0.05). Table 3 also presents the outcomes of the patients in the three groups at the end of the study. There were more improved and stable patients in the no-dose-reduction group (82.2%) than in the 4-week group (68.8%) or the 26-week group (76.6%). The difference in outcomes among the three groups reached a significant level (χ2=15.84, df=6, p=0.02).