background and purpose: identifying the risk factors of hepatitis c، b، and hiv is necessary to prevent their increasing prevalence. therefore، we sought to identify the frequency of their risk factors among the homeless of tehran، iran during 2005 to 2007. methods and materials: this descriptive analytical study was conducted during 2005 to 2007 on the homeless population of tehran، iran. two ...

objective: this survey aimed at studying the effects of socioeconomic and family factors in adolescents’ tendency towards smoking, alcohol consumption, and drug abuse. methods: using multistage sampling, 3530 high school students were selected in tehran, iran. they completed the iranian adolescents risk behavior scale questionnaire (iars) and demographic questionnaire with the main focus on the...

background: adolescence is a period of overwhelming changes and challenges, which expose the adolescents to high-risk behaviors. risky sexual relationship is one of these behaviors that entails physical risks and psychosocial harms. various factors have been recognized to shape sexual behaviors in adolescents. this paper is an attempt to investigate the factors contributing to high-risk sexual ...

results: the finding revealed that intention of family physicians to reduce referral rate of patients to specialists was significantly related to two theory-based variables of subjective norms (r = 0.38, p < 0.001) and perceived behavioral control (r = 0.43, p < 0.001), and not to attitudes. a stepwise regression entering direct measures of the theory variables explained 35% of the variance on ...