Teens are using birth control (contraceptives) more today when they lose their virginity than they did in the past, and this is in part due to the AIDS epidemic. Of sexually experienced adolescents, 78% of girls and 85% of males used at least one contraceptive when they lost their virginity. A detailed qualitative study of girls' loss of virginity found that their experiences "were almost all quite negative (and, in some cases, horrific)." Before age 15, "a majority of first intercourse experiences among females are reported to be non-voluntary."