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Table 3 Estimation of diagnostic validity of RPA, IHA and ELISA

From: Field evaluation of a recombinase polymerase amplification assay for the diagnosis of Schistosoma japonicum infection in Hunan province of China

Methods TRUE positive FALSE negative TRUE negative FALSE positive Sensitivity (%, 95% CIa) Specificity (%, 95% CIa) PPV% (95% CIa) NPV% (95% CIa)
RPA 61 0 134 5 100% (100) 96.40% (99.32–99.54) 92.41% (86.06–98.83) 100% (100)
IHA 49 12 116 23 80.32% (70.37-90.45) 83.45% (77.22-89.67) 68.06% (57.37-78.82) 90.67% (85.64-95.72)
ELISA 52 9 130 9 85.24% (76.34-94.15) 93.52% (89.44-97.61) 85.37% (76.34-94.18) 93.51% (89.45-97.67)
  1. a Exact 95% confidence intervals (CIs)