Fig. 6From: Incidence and predictors of virological failure among adult HIV patients on first-line antiretroviral therapy in Amhara regional referral hospitals; Ethiopia: a retrospective follow-up studyPlot of Nelsen-Aalen cumulative hazard function against Cox-Snell residual obtained by fitting Weibull (A), Gompertz(B), log logistic (C), Cox (D), lognormal (E)F(exponential) models for virological failure of HIV/AIDS patients on first line ART in Amhara regional referral hospitals; Ethiopia from September 2015 to December 2018Back to article page