Table 2.

Time to First Malaria Episode

	Clinical Malaria Episode			Clinical Episode With Any Parasitemia			Clinical Episode With Any Parasitemia, no Fever Criteria
	HR (Unadjusted)	HR (Adjusted)	Median Malaria-Free Days	HR (Unadjusted)	HR (Adjusted)	Median Malaria-Free Days	HR (Unadjusted)	HR (Adjusted)	Median Malaria-Free Days
Hb AA (n = 242)	1	1	181	1	1	168	1	1	142
	0.32	0.19		0.55	0.32		0.60	0.41
Hb AC (n = 39)	(0.15, 0.65)	(0.07, 0.49)	364	(0.32, 0.96)	(0.15, 0.67)	364	(0.37, 0.98)	(0.21, 0.77)	362
	(P = .002)	(P = .001)		(P = .035)	(P = .003)		(P = .043)	(P = .006)
	0.23	0.15		0.31	0.25		0.75
Hb AS (n = 14)	(0.06, 0.92)	(0.03, 0.69)	364	(0.10, 0.98)	(0.07, 0.88)	364	(0.35, 1.60)	…	157.5
	(P = .037)	(P = .015)		(P = .046)	(P = .031)		(P = .46)

Hazard ratios are reported with 95% confidence intervals.

Abbreviations: Hb, hemoglobin; HR, hazard ratio.