Figure 2.

Variability in measures of discordancy with respect to HIV prevalence across 20 countries in sub-Saharan Africa. Variation with respect to HIV prevalence of the proportion of HIV discordant partnerships among all stable partnerships with at least one HIV-infected individual in the partnership ($P_{\mathit{discord}}$) and of the proportion of HIV-infected individuals that are engaged in stable HIV discordant partnerships among the sexually active population ($l_{\mathit{pos}}$).