Chernick LS, et al. - Researchers performed an electronic survey among individuals aged 14-17 (n = 3,247) in 16 pediatric emergency departments across the US, in order to assess the pervasiveness of sex without contraceptives and to appraise patient demographic and risky behaviors linked with sex without contraceptives. In the prior year, sex without contraceptives was reported by 17.4% (236/1,356) of males and 15.8% (299/1,891) of females. In the multivariable model, teens who were black, with conduct problems and participated in casual sex, binge drinking, or cannabis use exhibited a higher tendency to have sex without contraceptives and thus had a higher likelihood of pregnancy and sexually transmitted infections acquisition. In addition, Hispanic and cigarette smoking males, as well as depressed females, exhibited a higher tendency to have sex without contraceptives.