. 2015 Jul 28;10(7):e0133204. doi: 10.1371/journal.pone.0133204

Table 3. Sensitivity and specificity of the CRAb-LAMP assay.

			Culture		Sensitivity	Specificity	PPV^a	NPV^b	PLR^c
			Positive	Negative
Clinical Samples	Sputum Directly	Positive	39	6	88.6	92.1	86.7	94.5	11.2
	Sputum Directly	Negative	5	70	(75.4–96.2)	(83.6–97.0)	(73.2–95.0)	(85.1–97.8)
	Extracted DNA	Positive	39	7	88.6	90.8	84.8	93.2	9.63
	Extracted DNA	Negative	5	69	(75.4–96.2)	(81.4–96.2)	(71.1–93.7)	(84.9–97.8)

PPV^a: positive predictive value;NPV^b: negative predictive value; PLR^c: positive likelihood ratio