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Table 6 Utility of day 3 parasite positivity for detection of isolates with long PC1/2 (> 5.5 h). False positive and false negative outcomes are estimated over a range of initial parasitemia values

From: Association of mutations in the Plasmodium falciparum Kelch13 gene (Pf3D7_1343700) with parasite clearance rates after artemisinin-based treatmentsa WWARN individual patient data meta-analysis

Parasitemia (/μL) N False positive % False negative %
< 10,000 127 0 51
10,000–50,000 491 3 26
50,000–100,000 804 5 8
100,000–300,000 887 14 3
≥ 300,000 438 29 0
All 2747 11 14