Figure 3From: Renal impairment after switching from stavudine/lamivudine to tenofovir/lamivudine in NNRTI-based antiretroviral regimensRelationship between age of patients and combined serum phosphorus levels at week 12 and 24 after NRTI switching. Lines represent regression prediction and 95 percent confidence intervals for the mean. Unfilled dot represents serum phosphorus in the EFV group; and filled dot represents serum phosphorus in the NVP group.Back to article page