But for me to believe this is a serious trend, I am going to have to see a little more evidence. They found that 16 percent had engaged in heterosexual anal intercourse within the time frame, with condoms being used 29 percent of the time. Still this study is disturbing. For each sex act, they were asked whether their partner was a "spouse, lover, or boyfriend or girlfriend. Among at-risk adolescents and young adults aged 15 to 21 years in 3 US cities, we assessed sexual risk behavior with each sexual partner in the past 90 days. Then another study informed us that the first study had been flawed. But, Kuriansky said, with fewer educational media outlets and less sex education, young girls are clueless about hygiene, possible bladder or vaginal infections and life-threatening diseases like AIDS. Young Women at Risk The Centers for Disease Control and Prevention also report that young women, especially those of minority races or ethnicities, are increasingly at risk for HIV infection through heterosexual contact. Males who engaged in this behavior were more likely to identify themselves as being homosexual, bisexual or undecided. Girls of her generation, the so-called third wave of feminism, she said, were able to have sex with multiple partners and could detach themselves "socially and emotionally. More than a third of the teens — most of them males — reported sex with a casual partner.