Least squares ( LS ) mean change from baseline to endpoint ( week 10 ) favored AOM versus placebo in PANSS total ( treatment difference , -15.1 [ 95 % CI , -19.4 to -10.8 ] ; P < .0001 ) and CGI-S ( treatment difference , -0.8 [ 95 % CI , -1.1 to -0.6 ] ; P < .0001 ) scores , as it did at all other timepoints through 12 weeks ( all P .0005 ) .