EPP-ASM and the r-hybrid model: new tools for estimating HIV incidence trends in sub-Saharan Africa.

Objectives:Improve models for estimating HIV epidemic trends in sub-Saharan Africa (SSA).Design:Mathematical epidemic model fit to national HIV survey and ANC sentinel surveillance (ANC-SS) data.Methods:We modified EPP to incorporate age and sex stratification (EPP-ASM) to more accurately capture th