tokens: Body mass index at baseline and at 4 months was 24 . 3 ( 95 % CI = 22 . 8 - 25 . 7 ) versus 28 . 2 ( 95 % CI = 26 . 7 - 29 . 7 ) with olanzapine and 23 . 9 ( 95 % CI = 22 . 5 - 25 . 3 ) versus 26 . 7 ( 95 % CI = 25 . 2 - 28 . 2 ) with risperidone .