According to Sex on TV 4, a biennial study by the Kaiser Family Foundation, the number of sexual scenes on television has nearly doubled since 1998. And while the inclusion of references to ?safer sex? issues ? such as waiting to have sex, using protection, or possible consequences of unprotected sex ? has also increased since 1998, that rate has leveled off in recent years. The study examined a representative sample of more than 1,000 hours of programming including all genres other than daily newscasts, sports events, and children?s shows. All sexual content was measured, including talk about sex and sexual behavior.