BACKGROUND Condoms offer the best protection against unintended pregnancies and sexually transmitted infections. Little research has been conducted to determine the prevalence and investigate the influencing factors of condom use at first sexual intercourse among college students. METHODS A self-administered questionnaire was completed by 1137 college students (573 male and 564 female) in the...

Girls who report first sexual intercourse during their early teen years have much higher rates of teenage pregnancy and childbearing than girls who delay sexual onset until older adolescence. In this study, we examine genetic and environmental influences on variation in teenage pregnancy and covariation with age at first sexual intercourse in two cohorts of Australian female twins. In the older...

PURPOSE To examine age differences between Nova Scotia women aged 15-19 and their male sexual partners, and to determine if those adolescents with older partners were more likely to have engaged in sexual risk-taking behaviours. METHODS A cross-sectional survey (response rate=91%) administered in May 2003 assessed the following sexual risk behaviours: (a) not using condom/hormonal contracepti...

A performance-based measure of peer influence susceptibility was examined as a moderator of the longitudinal association between peer norms and trajectories of adolescents' number of sexual intercourse partners. Seventy-one 9th grade adolescents (52% female) participated in an experimental "chat room" paradigm involving "e-confederates" who endorsed sexual risk behaviors. Changes in participant...

BACKGROUND China is facing a critical challenge of rapid and widespread human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome (AIDS) increase. Rural-to-urban migration plays a crucial role in shifting the HIV/sexual transmitted infection (STI) epidemic. The purpose of this study was to assess the prevalence of sexual behaviors and the correlates among the early adolescents of mi...

Purpose: This study aimed to clarify the prevalence and influential factors of sexual behaviors among Chinese junior high school students using the validated measures and research methods employed in the Japanese study for the purpose of developing an effective sex education program to prevent premature sexual behaviors among Chinese junior high school students. Methods: The study sample was co...

INTRODUCTION Little is known about the impact of surgery for stress urinary incontinence (SUI) on female sexual function, and results are conflicting. AIMS We aimed to clarify the impact of surgery for SUI on female sexual function. METHODS We analyzed data collected from two studies evaluating sexual function in women after placement of the tension-free vaginal tape, tension-free vaginal t...

HEALTH ISSUE: Much attention is devoted to women's reproductive health, but the formative and mature stages of women's sexual lives are often overlooked. We have analyzed cross-sectional data from the Sexual Behaviour module of the 2000/2001 Canadian Community Health Survey (CCHS), and reviewed the literature and available indicators of the sexual health of Canadian women. KEY FINDINGS: Contemp...

OBJECTIVES To identify and report cross-national patterns in contraceptive use among sexually active adolescents. DESIGN A cross-national cross-sectional survey. SETTING Data were collected in 2002 by self-report questionnaire from students in school classrooms. PARTICIPANTS A cluster sample of 33,943 students aged 15 years from 24 countries. MAIN OUTCOME MEASURES International standard...

OBJECTIVES We examined the association between unprotected anal intercourse and sexually transmitted diseases (STDs) among heterosexual women. METHODS In 2006 through 2007, women were recruited from high-risk areas in New York City through respondent-driven sampling as part of the National HIV Behavioral Surveillance study. We used multiple logistic regression to determine the relationship be...