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Table 2 Diagnostic performance of the Ov-RPA–CRISPR/Cas12a assay based on the fluorescence values for detecting O. viverrini infection in field-collected fecal samples (n = 121) compared with standard methods (KK and/or FECT methods)

From: Ov-RPA–CRISPR/Cas12a assay for the detection of Opisthorchis viverrini infection in field-collected human feces

Diagnostic performance of the Ov-RPA–CRISPR/Cas12a assay

Value

95% CI

Sensitivity

62.1%

42.3–79.3%

Specificity

89.1%

81.0–94.7%

Positive likelihood ratio (LR+)

5.7

3.0–11.0

Negative likelihood ratio (LR−)

0.4

0.3–0.7

Positive predictive value (PPV)

85.1%

74.9–91.6%

Negative predictive value (NPV)

70.2%

59.5–79.0%

Accuracy

75.6%

67.0–83.0%

  1. LR likelihood ratio, PPV positive predictive value, NPV negative predictive value, KK Kato–Katz method, FECT formalin ethyl–acetate concentration technique. LRs were estimated using a 50% prevalence rate of O. viverrini