Table 2.

Performance characteristics of intestinal tissue and mesenteric lymph node (MLN) quantitative PCR (qPCR) with reference to tissue culture and tissue histopathological lesion results.

Test	Tissue	Reference test	Se [95% confidence interval (CI)]a	PDLR (95% CI)b
qPCR	Intestine	Culture	88.34 (80.22, 96.46)	3.78 (2.24, 6.39)
		Histopathological lesions	85.72 (75.92, 95.52)	2.53 (1.71, 3.74)
	MLN	Culture	86.45 (77.71, 95.18)	2.19 (1.52, 3.15)
		Histopathological lesions	81.82 (71.63, 92.02)	1.99 (1.38, 2.86)
	Bothc	Culture	95.32 (90.14, 100.00)	2.16 (1.54, 3.04)
		Histopathological lesions	89.66 (81.82, 97.50)	1.72 (1.28, 2.31)

^aSe = estimated test sensitivity in percentage and 95% CI of the estimate.

^bPositive diagnostic likelihood ratio and CI.

^cParallel test results of both tissues were compared with parallel test results of the reference tests for both tissues.