More Teen Boys Using Condoms: CDC But main pregnancy determinants haven't changed By Kevin Spak, Newser Staff Posted Oct 14, 2011 12:18 PM CDT 4 comments Comments An employee of the German condom maker Condomi AG checks condoms before their packaging in this file photo. (Getty Images/AFP) (Newser) – Teenage boys are learning the value of wearing a rubber. According to a new CDC study, 80% of boys aged 15-19 say they used a condom the first time they had sex, a nine-point jump from 2002, the LA Times reports. Even better, 16% said that in addition to using a condom, their partners were on hormonal birth control. In all, 85% of boys used some form of contraception when they lost their virginity. Girls lagged behind somewhat, with 78% reporting that they used contraception. But the good news stops there. Overall, the main determinants of teen pregnancy—sexual activity and contraceptive use—haven’t changed much since 2002, the report found. The percentage of sexually experienced teens, teens who'd had sex recently, and those who used contraceptives the first and last time they did so, all remained unchanged.