Table 3. Performance of mCIM and PCR in the identification of carbapenemase-producers.

mCIM	PCR positive	PCR negative	Sensitivity	Specificity	PPV	NPV	Accuracy	Cohen’s kappa
Positive	79	1	100.0%	95.5%	98.8%	100.0%	99.0%	0.970
Negative	0	21

mCIM, modified carbapenem inactivation method; PCR, polymerase chain reaction; eCIM, EDTA-carbapenem inactivation method.