. 2014 Mar;52(3):971–973. doi: 10.1128/JCM.02567-13

TABLE 2.

Clinical performance characteristics of the two commercial PCR assays performed on the cobas z 480 analyzer for the detection of M. genitalium

Assay	Result	No. of samples by in-house PCR result		% sensitivity^a (95% CI)	% specificity^a (95% CI)	NPV^b (%)	PPV^b (%)
Assay	Result	Positive	Negative	% sensitivity^a (95% CI)	% specificity^a (95% CI)	NPV^b (%)	PPV^b (%)
TIB MOLBIOL	Positive	50	0	92.6 (82.4–97.1)	NA	92.6	100
TIB MOLBIOL	Negative	4	50	NA	100 (92.9–100)	92.6	100
Diagenode	Positive	47	0	87 (75.6–93.4)	NA	87.7	100
Diagenode	Negative	7	50	NA	100 (92.9–100)	87.7	100

The results of the commercial assays were compared to the in-house results using McNemar's test. P values were >0.05. CI, confidence interval; NA, not applicable.

NPV, negative predictive value; PPV, positive predictive value.