In a multivariate model, use of NVP (adjusted HR 1.67, 95% CI 1.28–2.10), female gender (aHR 1.39, 95% CI 1.01–1.92), and CD4 counts (aHR 0.88, 95% CI 0.82–0.95, for each 50 cells/mm3 increment in baseline CD4) were associated with risk for developing a rash. Here, CD4 is linked to Skin rash.