the effect of sociodemographic factors on constructs of modified theory of planned behavior in relation to reproductive health in adolescents: crosssectional study

Background & aim: identification of factors influencing reproductive health-related behavior among adolescent students is an important issue to plan effective intervention. therefore, this study was aimed to determine the effect of sociodemographic factors on constructs modified theory of planned behavior (tpb) in relation to reproductive health in adolescents.methods & materials: a cross-sectional study was conducted among 578 female students aged 12-16, recruited through a multistage random cluster sampling method, in tehran, iran. a self-administered tpb-based constructed questionnaire was designed and used for data gathering. multivariate regression analyses were conducted to examine association between family size, number of siblings, birth rank, and family closeness, source of information, and reproductive health behavior.results: the mean age of participants was 14.1 years. none of participants were not obtained a perfect score in relation to reproductive health. in addition, they were achieved scores average less than half the rates. number of siblings, family size, birth rank, mother education, and information source were factors associated with tpb constructs (p < 0.001).conclusion: the results of this study were emphasized sociodemographic factors can have an effective role in students’ sexual and reproductive health behaviors.