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In the initial full model, all variables and terms for interaction with age at first sexual intercourse were entered simultaneously. Email alerts New issue alert. While age at first sexual intercourse may be a helpful indicator of STI risk among adolescents, clinicians should be aware that young adults who started having sex recently are at similar STI risk as those who have been having sex throughout most of their adolescence. Thus, earlier first sexual intercourse is strongly associated with STIs for older adolescents but not for young adults over age 23, at which point the association becomes nonsignificant. Furthermore, sampling weights for wave 3 were recalculated using poststratification techniques, which helps to ensure the representativeness of the sample. Younger ages at first intercourse were associated with higher odds of STI in comparison with older ages, but the effect diminished with increasing current age.

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The authors used multiple logistic regression to assess the relation between age at first sexual intercourse and these STIs and to examine variation by current age, sex, race, and ethnicity. With regard to sexual behavior, adolescents develop elaborate sets of ideas concerning sexuality and their sexual roles well before they actually engage in sexual activity

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Can a Girl Get Pregnant the First Time She Has Sex?

This study sample of sexually experienced young adults was approximately half male and half female. The mean current age in our study sample at wave 3 was Of those, 9, had complete data on our variables of interest, with almost all of the missing data being attributable to respondents' lacking results for the biologic STI laboratory tests approximately 8 percent of respondents chose not to provide a specimen; approximately 2 percent were unable to provide a specimen at the time of the interview; 3 percent of specimens could not be processed because of shipping and laboratory problems; and 6 percent of the N. If delaying sexual intercourse in adolescence carries a lasting benefit of reduced STIs in young adulthood, this would represent a potentially huge impact for such a strategy in terms of long-term health benefits in the population. Self-reports may also have introduced bias into previous studies, since diagnosis may depend on access to regular health services. In a simple unadjusted logistic regression model, the prevalence odds ratio for the relation between age at first intercourse and adult STIs was 0. Furthermore, unlike reports of lifetime infections, our data included the ages of the respondents at the time their infections were detected.

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