Alternative high schools serve approximately 280,000 students nationwide who are at high risk for failing or dropping out of regular high school or who have been expelled from regular high school because of illegal activity or behavioral problems. Such settings provide important opportunities for delivering health promotion education and services to these youth and young adults. However, before...

A meta-analytic review of the influence of HIV risk reduction interventions on sexual occasions, number of partners, and abstinence was conducted to assess whether condom-related interventions inadvertently undermine sexual risk reduction efforts by increasing the frequency of sexual behavior. Included studies examined sexual risk reduction strategies and used a controlled design. Data from 174...

background : people with sexually transmitted infections (stis) constitute the high-risk group for transmission of hiv. the present study was planned to estimate the prevalence of hiv and syphilis in patients attending sti clinic and to assess the socio-demographic determinants of the study subjects. methods : a cross sectional descriptive study of three-month duration was undertaken from janua...

Background: Trichomoniasis is a worldwide sexually transmitted disease (STD), and is associated with important public health problems, including enhancement of HIV transmission. The prevalence of the parasite, Trichomonas vaginalis, depends on host factors such as age, sexual activity, number of sexual partners and sexual behavior. The aim of the study was to evaluate the prevalence of trichomo...

the aim of this study was to examine potato growers' perceptions of risk sources and risk management strategies and their risk management behavior. a survey research method was used in this study. the data originated from a sample of potato growers (n= 128) of ardabil province in the cropping year of 2013. the respondents were divided into two groups of less risk-averse (lra) and more risk-aver...

modern portfolio theories are based on markowitz’s portfolio optimization model that involves the assumption of mean variance behavior and therefore require the asymmetry and normality of returns. this issue also affects the capital asset pricing model that estimates systematic risk and uses it in pricing securities. this article analyzes the various measures of risk. the main purpose of this r...