Table 3:

Susceptibility to selected antimicrobial agents of all Escherichia coli isolates, E. coli that did not produce extended-spectrum β-lactamase and E. coli that produced extended-spectrum β-lactamase, 2016

Agent	% of isolates susceptible			p value^*
Agent	All Escherichia coli n = 513	Non–ESBL-producing Escherichia coli n = 424	ESBL-producing Escherichia coli n = 89	p value^*
Ciprofloxacin	64.3	75.7	10.1	< 0.001
Trimethoprim–sulfamethoxazole	66.9	73.8	33.7	< 0.001
Tobramycin	80.5	87.3	48.3	< 0.001
Gentamicin	85.4	88.2	71.9	< 0.001
Ceftriaxone	81.3	98.3	0.0	< 0.001
Ertapenem	99.8	100.0	98.9	0.2
Meropenem/imipenem	100.0	100.0	100.0	–

Note: ESBL = extended spectrum β-lactamase.
↵* For the difference in susceptibility between non–ESBL-producing E. coli and ESBL-producing E. coli (Fisher exact test).