Figure 1

Serial changes in DRS-K severity scores in the four antipsychotic groups. Mean changes in DRS-K severity scores with 95% confidence intervals. In all antipsychotic groups, the mean DRS-K severity score decreased significantly over the study period (all p-values analyzed by linear mixed model statistics < 0.0001). However, there were no significant differences in the degree of reduction in mean DRS-K severity score with time among the four groups (p-values analyzed by linear mixed model statistics = 0.779).