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Table 2 Variation in malaria positivity of samples between RDT, microscopy and nPCR in the study area (Tigray, Amhara and Benishangul-Gumuz Regions), 2015

From: Assessment of subpatent Plasmodium infection in northwestern Ethiopia

Diagnostic methodsSpecies diagnosedNumber of positivesPercent positivity (95% CI)Percent relative change from PCR
RDT (n = 2606)P. falciparum (HRP2+)501.9 (1.5–2.5)− 37.5
P. vivax/P. malariae/P. ovale (panLDH+)120.5 (0.3–0.8)0.0
P. falciparum or mixed (HRP2 and panLDH+)110.4 (0.2–0.7)N/A
Total Plasmodium positive732.8 (2.2–3.5)− 16.1
Microscopy (n = 2605)P. falciparum251.0 (0.6—1.4)− 68.8
P. vivax40.2 (0.0–0.4)− 60.0
Mixed P. falciparum + P. vivax20.08 (0.0–.03)− 33.3
Total Plasmodium positive311.2 (0.8–1.7)− 64.4
nPCR (n = 2608)P. falciparum monoinfection803.1 (2.5–3.8) 
P. vivax monoinfection100.4 (0.2–0.7) 
Mixed P. falciparum + P. vivax30.1 (0.0–0.4) 
Mixed P. falciparum + P. malariae20.07 (0.0–0.3) 
Total Plasmodium positive873.3 (2.7–4.1)