Fig. 4From: Modelling the impact of correlations between condom use and sexual contact pattern on the dynamics of sexually transmitted infectionsForest plot of potential association between condom use and concurrency (i.e., having 1 partner alone or 2 or more concurrent partners). Centre of each square points the relative risk with its size reflecting the sample size. Whiskers extend to lower and upper 95% confidence intervals. Diamond represents the group estimate based on random effects model. I2 statistic shows the extent of heterogeneityBack to article page