Table 2.

Specificity and sensitivity of the qPCR system for bla group gene detection.

Resistance gene target	Clinical urines (n = 78)					Strains (n = 78)
	True (+) = A	False (-) = B	False (+) = C	True (-) = D	Sensitivity; specificity, %	True (+) = A	False (-) = B	False (+) = C	True (-) = D	Sensitivity; specificity, %
blaSHV-12	34	0	0	44	100; 100	34	0	0	44	100; 100
blaTEM	46	0	0	32	100; 100	46	0	0	32	100; 100
blaCTX-M15	56	0	0	22	100; 100	56	0	0	22	100; 100
blaCTX-M9	42	0	0	36	100; 100	42	0	0	36	100; 100
blaCMY-2	29	0	0	49	100; 100	29	0	0	49	100; 100
blaOXA-48	7	0	0	71	100; 100	7	0	0	71	100; 100
blaIMP-1	0	0	0	78	100; 100	0	0	0	78	100; 100
blaNDM-1	1	0	0	77	100; 100	1	0	0	77	100; 100