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Table 1 The sensitivity and specificity of PfHRP2-based RDT against the reference technique (microscopy) using samples collected from Hodeidah and Al-Mahwit, Yemen (n = 622)

From: Genetic variation of pfhrp2 in Plasmodium falciparum isolates from Yemen and the performance of HRP2-based malaria rapid diagnostic test

RDT Microscopy  
Negative Positive Total
Negative 416 18 434
Positive 17 171 188
Total 433 189 622
  1. Sensitivity: true positive = 171/189 = 90.5 %; false negative error rate = 18/189 = 9.5 %. Specificity: true negative = 416/433 = 96.1 %; false positive error rate = 17/433 = 3.9 %. PPV: 171/188 = 91.0 %; NPV: 416/434 = 95.9 %