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Table 4 Performance of Paracheck Pf.® between interpreting faint test bands as malaria positive and negative

From: The correlation between malaria RDT (Paracheck pf.®) faint test bands and microscopy in the diagnosis of malaria in Malawi

Interpretation of faint test bands Sensitivity (number/total) [95%CI] Specificity (number/total) [95%CI] PPV (number/total) [95%CI] NPV (number/total) [95%CI] Accuracy of diagnosis (number/total) [95%CI]
Faint test bands as malaria (+) 74.2% (66/89) [63.8–82.9] 77.3% (231/299) [72.1–81.9] 49.3% (66/134) [40.5–58] 90.9% (231/254) [86.7–94.2] 76.5% (297/388) [72–80.7]
Faint test bands as malaria (−) 70.8% (63/89) [60.2–79.9] 83.3% (249/299) [78.6–87.3] 55.8% (63/113) [46.1–65.1] 90.5% (249/275) [86.5–93.7] 80.4% (312/388) [76.1–84.2]