In 10th grade , compared with the control condition , both programs significantly delayed anal sex initiation in the total sample ( RA : adjusted odds ratio [ AOR ] , .64 , 95 % confidence interval [ CI ] , .42 -.99 ; RR : AOR , .65 , 95 % CI , .50 -.84 ) and among Hispanics ( RA : AOR , .53 , 95 % CI , .31 -.91 ; RR : AOR , .82 , 95 % CI , .74 -.93 ) .