Table 3.

Asexual parasite densities estimated by SBP1 on days 7, 10, and 14 after initiation of treatment

Treatment arm	Days since treatment	N	Median (25th–75th percentiles)	P value
Combined	14	53	1,741.8 (805.4–6025.6)
	10	41	668.3 (309.7–1710.0)	0.0062
	7	43	1,074 (323.4–2,275.1)	0.0162
AL	14	10	1,706.1 (1,081.4–2,296.1)
	10	5	447.7 (291.7–937.6)	0.1171
	7	8	817 (308.1–2,895.1)	0.778
AL + 0.25 mg PQ	14	22	2,230.8 (409.3–3,033.9)
	10	20	670 (439.6–1,565.1)	0.1341
	7	17	1,074 (339.6–1,798.9)	0.2345
AL + 0.40 mg PQ	14	21	1,990.7 (977.2–10,568.2)
	10	16	887.5 (220.6–2,338.9)	0.0385
	7	18	1,087.9 (282.5–1,584.9)	0.0408

AL = artemether/lumefantrine; N = number of samples positive for SBP1; PQ = primaquine; SBP1 = skeleton-binding protein 1. Density is expressed as estimated number of parasites per milliliter of blood. The P value reflects the difference in density between day 14 and days 7 and 10.