For this population, there was not a statistically significant relationship between either G6PDd or sickle cell trait and time to first malaria infection, although there was a trend towards reduced hazard of earlier episodes of first malaria (G6PDd (A-) unadjusted hazard ratio: 0.62, 95% CI 0.31, 1.23; p-value: 0.173 and sickle cell trait (Hb-A/S allele) unadjusted hazard ratio: 0.77, 95% CI 0.39, 1.52; p-value: 0.307). This evidence concerns the gene GSTM1 and malaria.