Adolescent sexual behavior is usually multidimensional, yet most studies of the topic use variable-oriented methods that reduce behaviors to a single dimension. improved with regular membership in classes with more risky actions whereas females’ rates were consistent among all sexually active classes. These findings demonstrate the advantages of analyzing adolescent sexuality in a way that emphasizes its difficulty. can provide unique insight concerning how an individual’s entire spectrum of sexual actions interact, what predicts particular patterns of behavior, and what the consequences are (von Vision & Bergman, 2003). A small number of studies have used person-oriented methods to examine adolescent sexual behavior. For example, one study used latent class analysis (LCA) to identify classes designated by different timetables of Trp53inp1 vaginal, oral, and anal sexual behavior, finding that classes designated by initiation of both vaginal and oral sex in the same 12 months were the most common, with small numbers of individuals belonging to classes designated by less standard patterns of initiation (Haydon, Herring, Prinstein, & Halpern, 2012). Another study examined latent profiles of sexual risk behavior designated by condom use, number of partners, and rate of recurrence of sex, getting Entinostat organizations designated by both relatively healthy and relatively risky patterns of sexual behavior. Specifically, four classes were selected for sexually active 11th and 12th graders: Condom Users, One Partner, Two Partners, and Risk-Takers (Beadnell et al., 2005). One recent Entinostat study used LCA with a wide variety of signals, including pre-coital actions, intercourse and oral sex, quantity of partners and contraceptive use, and found classes designated by low, Entinostat medium, and high risky behaviors; however, because of the young age of the sample (M age around 15 years), only a relatively small percentage (about 20%) experienced engaged in sexual intercourse and, therefore, these classes primarily differentiated between those who were sexually active and those who were not, rather than encompassing the different behaviors and conditions that comprise adolescents’ sexual behavior (Hipwell, Stepp, Keenan, Chung, & Loeber, 2011). One study that did examine a variety of dating and sexual behaviors later on in adolescence showed five unique classes of behaviors, including classes designated by no sexual activity and relatively healthy and risky behaviors (Lanza & Collins, 2008). These studies possess begun to demonstrate the benefits of a multidimensional approach to modeling sexual behavior, providing insight into numerous behavior patterns. However, there are several ways to increase upon this work. First, most studies have used convenience samples of adolescents, such as a solitary school area (Beadnell et al., 2005) or ladies in one city (Hipwell et al., 2011). One study that used a nationally representative sample focused only on timing of several sexual behaviors (Haydon et al., 2012). Including signals of circumstance of sexual encounters (e.g., condom use, partners) will provide a more total picture of adolescent sexual behavior. Another study that did focus on a wider range of behavior and contexts used an early adolescent sample in which relatively few people were sexually active (Hipwell et al., 2011). Therefore, relatively little is known about the multidimensional nature of sexual behavior during the middle or late adolescent years, when sexual behavior is more common than in early adolescence. In addition, little is known about how such patterns of behavior may be connected with future health results. Such info would provide information about the validity of class membership like a predictor of later on health and provide health educators and prevention scientists information about who is at very best risk. Adolescents and young adults have high rates of STIs (Weinstock et al., 2012), which can lead to bad health results, including cancers and pelvic inflammatory disease (Gillison et al., 2008; Gray-Swain, & Peipert, 2006; Scully, 2005). Several different facets of sexual behavior have been linked to STIs, including early age at first intercourse, inconsistent condom use, and sex with multiple partners (Alfonsi & Shlay, 2005; Gallo Entinostat et al., 2007; Kaestle, Halpern, Miller, & Ford, 2005; Kelly, Borowski, Flocke, & Keen, 2003; Upchurch, Mason, Kusunoki, & Johnson, 2004; Wald et al., 2005; Winer et al., 2006)..