title: Do Adolescent Sexual Behavior and Intention to Engage in Sexual Behavior Change in High School Years in Hong Kong?
abstract: OBJECTIVE
  In this study we examined sexual behavior and intention to engage in sexual behavior among Chinese high school students in Hong Kong using 6 waves of data collected over 6 years. We also focused on the related sociodemographic and family correlates. DESIGN, SETTING, PARTICIPANTS, INTERVENTIONS, AND MAIN OUTCOME MEASURES: A 6-year longitudinal study was conducted. At each wave, a questionnaire was used to collect data on sociodemographic characteristics, positive youth development, and family functioning in the respondents.
  
  
  RESULTS
  Individual growth curve models showed that adolescent sexual behavior and intention increased over time. Adolescents with higher levels of positive youth development reported lower levels of past sexual behavior. Youths from better-off and higher functioning families increased their sexual behavior at slower rates than did youths from families with economic disadvantage and poor family functioning. Regarding intention to have sex, older adolescents reported higher levels of intention. Youngsters with higher levels of perceived family functioning and positive youth development reported lower levels of initial intention. Adolescent boys increased their intention at a faster rate than did girls.
  
  
  CONCLUSIONS
  Findings from the study identified risk factors (ie, age, gender, and economic disadvantage) and protective factors (ie, healthy family functioning, positive youth development) that influence the levels and growth rates of adolescent sexual behavior and intention. Implications for future research and interventions are discussed.
authors.affiliation: Department of Applied Social Sciences, The Hong Kong Polytechnic University, Hong Kong, P.R. China; Centre for Innovative Programs for Adolescents and Families, The Hong Kong Polytechnic University, Hong Kong, P.R. China; School of Social Development, East China Normal University, Shanghai, P.R. China; Kiang Wu Nursing College of Macau, Macau, P.R. China; University of Kentucky College of Medicine, Lexington, USA. Electronic address: daniel.shek@polyu.edu.hk.
authors.forename: D T L
authors.initials: DT
authors.lastname: Shek
authors.affiliation: Department of Applied Social Sciences, The Hong Kong Polytechnic University, Hong Kong, P.R. China.
authors.forename: H
authors.initials: H
authors.lastname: Leung
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000523:psychology*; D041923:Adolescent Development; D005195:Family Relations; D005260:Female; D006723:Hong Kong / Q000453:epidemiology; D006801:Humans; D033182:Intention; D008137:Longitudinal Studies; D008297:Male; D012307:Risk Factors; D012725:Sexual Behavior / Q000523:psychology / Q000706:statistics & numerical data*; D012959:Socioeconomic Factors; D013334:Students / Q000706:statistics & numerical data; D011795:Surveys and Questionnaires
keywords: Chinese adolescents; High school students; Sexual behavior; Sexual behavior intention