substance abuse in adolescents and its often tragic consequences, including addiction, is one of the preventable major public health problems. the aims of this paper were to estimate the prevalence of substance abuse and to evaluate its some associated factors in adolescents of tabriz city (northwest of iran).a self-administered questionnaire was completed in 4903 randomly selected students wit...

background: this paper aims to examine the reproductive health and behaviors which might expose young people at risks of stis/hiv and potential correlates of such behaviors among female college students in tehran. methods: this paper focuses on the study conducted on a sample of 1743 female undergraduate students in four multidisciplinary universities in tehran during 2005-2006 using a two-stag...

background: this study aimed at determining the drug abuse pattern and the frequency of high-risk behaviors among the clients of methadone maintenance treatment centers and drop-in centers in shahroud county of semnan province. methods: in this cross-sectional study, the data collection tool was a questionnaire including 10 general and 32 specific items about drug abuse pattern and high-risk be...

background: low birth weight (lbw) is one of the most important health indicators in the world. it has certain known and unknown causes. the present study was designed to evaluate the role of socio-behavioral factors on neonatal birth weight. methods: the current case-control study was conducted on 300 eligible neonates (150 lbw infants as cases and 150 normal body weight infants as controls) i...

behavior refers to the actions made by organisms in conjunction with their environment, which includes the other systems or organisms around as well as the physical environment. lots of types of behavior exist such as conscious or unconscious, voluntary or involuntary and overt or covert. childhood has a remarkable role on formation of human behavior in his later life which already has been pro...

background: textile factory is among the most common manufacturing industries that has higher rate of work-related injuries. knowing the associated factors of work-related injuries can be a critical step for improving the working condition of workers in the sector. objective: to assess the major determinants of occupational injury among workers in kombolcha textile factory, north-east ethiopia....

background: this study investigates whether the amount of time that korean adolescents spend on the internet per day is related to their weight status. methods: for this purpose, we analyzed data from the 2009 korea youth risk behavior web-based survey-v (kyrbws-v), in which 72,399 students from the 7 th to the 12 th grade participated. we assessed the relationship between the amount of time sp...

background: the purpose of this study was to investigate the association between physical inactivity and academic record in korean adolescents. methods: adolescent students from the first grade of middle school to the third grade of high school (n=75,066) participated in the 5th korea youth risk behavior web-based survey project in 2009. the association between physical inactivity and academic ...