RESUMO
BACKGROUND: Recently, serious morbidity events associated with initial glomerular filtration rate (GFR) have been described during HIV infection, but this is insufficiently investigated in sub-Saharan Africa very affected by HIV. OBJECTIVE: To assess the impact of baseline GFR prevailing during the first semester of the HIV infection management on six-year survival in peoples taking antiretroviral therapy. PATIENTS AND METHODS: Closed retrospective cohort study. The death was the expected outcome, the baseline GFR (mL/min/1.73m2) in the first semester of the follow-up was the main exposure. Kaplan-Meier method, Cox regression were used for analysis. RESULTS: According to baseline GFR: <60, 60-89 and≥90, the six-year survival was 81.6%; 95.8% and 96.4% (P=0.067 Breslow). Adjusted hazard ratio for baseline GFR<60 and 60-89 (vs. ≥90) were respectively 5.4 (95%CI: 1.4-19.9; P=0.012) and 1.2 (95%CI: 0.3-4.0; P=0.754). The etiological fraction of deaths attributable to baseline GFR: GFR<60: 81% (95%CI: 0.31-0.95), GFR=60-89: 18.0% (95%CI: -0.7-0.8). Prognostic concordance index=0.84 (95%CI: 0.59-0.95) for GFR<60 and 0.55 (95%CI: 0.27-0.81) for GFR 60-89. DISCUSSION: The etiological fraction of death and prognostic concordance index associated to baseline GFR level increase significantly with decline of baseline GFR. CONCLUSION: Baseline GFR seems to predict the six-year survival in African sub-Saharan patients treated for HIV.
