Comparison of Different Phenotypic Tests versus PCR in the Detection of Carbapenemase-Producing Pseudomonas aeruginosa Isolates in Hamadan, Iran

Table 6

Results of sensitivity, specificity, NPV, and PPV in MHT versus IMP.EDTA test.

	No.	MHT				No.	IMP.EDTA
		Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)		Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)
A	5/11	64	95	84	86	6/11	68	88	68	88
B	23/40	70	97	97	34	22/40	68	90	97	33
C	14/25	69	96	96	68	16/25	73	88	89	72
D	18/35	67	93	97	45	20/35	70	87	94	48
IMP	15/20	80	93	90	85	13/20	74	87	83	80
VIM	14/19	79	93	90	85	10/19	67	88	82	76
SIM	4/8	66	95	80	91	3/8	61	87	57	89
SPM	11/17	73	93	89	84	10/17	70	88	80	82
GIM	11/21	67	93	91	73	12/21	70	87	84	75

NPV: negative predictive values. PPV: positive predictive value.