tokens: There was a significant difference in insulin sensitivity index among groups ( F ( 33 ) = 10 . 66 ; P < . 001 ) ( clozapine < olanzapine < risperidone ) , with subjects who received clozapine and olanzapine exhibiting significant insulin resistance compared with subjects who were treated with risperidone ( clozapine vs risperidone , t ( 33 ) = - 4 . 29 ; P < . 001 ; olanzapine vs risperidone , t ( 33 ) = - 3 . 62 ; P = . 001 [ P < . 001 ] ) .