Table 3.

Accuracy of wet mount microscopy and in-house PCR against Culture for TV diagnosis

Culture
Test	TP	FP	FN	TN	Sensitivity (95% CI)	Specificity (95% CI)	Kappa agreement	PPV (95% CI)	NPV (95% CI)
PCR	11	1	1	137	91.7 (61.5–99.8)	99.3 (96.0–100.0)	0.91	91.6% (60.8–98.7%)	99.3% (95.5–99.9%)
Wet mount	3	0	9	138	25.0 (5.5–57.2)	100 (97.4–100.0)	0.38	100% (CI NA)	93.8% (91.7–95.5%)

95% CI 95% Confidence interval, FN False negative, FP False positive, NA Not applicable, NPV Negative predictive value, PPV Positive predictive value, TN True negative, TP True positive