From coitus to concurrency: sexual partnership characteristics and risk behaviors of 15–19 year old men recruited from urban venues in Tanzania

摘要

Understanding the uptake and patterns of sexualpartnerships of adolescent males reveals their riskybehaviors that could persist into adulthood. Using venuebasedsampling, we surveyed 671 male youth ages 15–19from an urban Tanzanian neighborhood about their sexualpartnerships during the past 6 months. The proportion ofmales who had ever had sex increased with age (21 % atage 15; 70 % at age 17; 94 % at age 19), as did the proportionwho engaged in concurrency (5 % at age 15; 28 %at age 17; 44 % at age 19). Attendance at C2 social venuesper day and meeting a sexual partner at a venue wasassociated with concurrency. Concurrency was associatedwith alcohol consumption before sex among 18–19 yearolds and with not being in school among 15–17 year olds.We find that concurrency becomes normative over maleadolescence. Venue-based sampling may reach youth vulnerableto developing risky sexual partnership patterns.