Author:Flisher, Alan J; Mathews, Catherine; Mukoma, Wanjiru; Lombard, Carl JDate:2006Objective. To compare prevalence rates of selected risk behaviours and age of first intercourse of grade 8 students in Cape Town between 1997 and 2004. Design. Cross-sectional surveys in 1997 and 2004. Survival analysis was used to estimate ...Read more