The current study examines sexual risk behaviors, HIV knowledge and attitudes among women heroin users in China. A sample of 167 women heroin users was recruited from a detoxification center located in Lanzhou City, China. Close to 80% of participants reported multiple sex partners in their lifetime, and more than half of married participants reported extramarital sex. Injection drug users were...

BACKGROUND High quality counseling of potential parents is needed in the process of disclosure to donor offspring, which is important for the child and for family relationships. We performed a search for facts to identify the role of counseling in couples undergoing gamete donation. METHODS We systematically searched Pubmed, EMBASE and Psychinfo. Studies were included if they reported on coun...

We study the impact of social influence on the performance of ads on social networks. Using data for several ads on Facebook for two different firms, we measure the impact of past connections on the click rate and endorsement rate of ads. We find that increase in the connections does not lead to an increase in the click performance and may even decrease the click performance. We also find that ...

By enabling connections between individuals, Social Networking Sites, such as Facebook, promise to create significant individual as well as social value. Encouraging connections between users is also crucial for service providers who increasingly rely on social advertising and viral marketing campaigns as important sources of their revenue. Consequently, understanding user’s network constructio...

BACKGROUND Despite being in a different country and social environment, Ugandans living in the UK still reportedly have the lowest rates of condom usage and one of the highest incidences of STIs in UK. In Uganda, STIs and HIV prevalence has been reported to be on the increase. Understanding peoples' beliefs and the attitudes that influence their behavior is a key factor to effectively designing...

Objective: To assess the relationship between men’s reported violence against wives and their sexual risk behaviours and sexual health. Design, setting and participants: Cross-sectional analyses of a survey of a nationally representative household-based sample of married men in Bangladesh (n = 3096). Main outcome measure(s): Physical and sexual violence against wives during the previous 12 mont...