Table 2.

Changes in Positive and Negative Syndrome Scale total and subscale scores at endpoint, by treatment

PANSS scale	Olanzapine versus haloperidol			Olanzapine versus risperidone			Olanzapine versus ziprasidone
	Olz	Hal	Pvalue	Olz	Ris	Pvalue	Olz	Zip	Pvalue
Total	−16.7	−12.6	0.011	−12.4	−9.5	0.054	−35.7	−26.0	<0.001
Depressive	−2.3	−1.7	0.012	−2.0	−1.6	0.18	−3.9	−3.0	<0.001
Disorganized thought	−2.8	−2.1	0.025	−1.9	−1.3	0.011	−6.0	−4.1	<0.001
Hostility	−2.0	−1.8	0.26	−0.9	−0.6	0.54	−4.2	−2.6	<0.001
Negative	−3.1	−2.1	0.07	−2.6	−1.8	0.10	−8.4	−6.7	<0.001
Positive	−6.4	−5.1	0.08	−5.1	−4.2	0.19	−13.2	−9.6	<0.001

Abbreviations:Hal, haloperidol; Olz, olanzapine; PANSS, Positive and Negative Syndrome Scale; Ris, risperidone; Zip, ziprasidone.