Table 5.

The impact of UTI and other risk factors on the presence of ESBL among patients having E. coli/Klebsiella spp. positive in culture (n=247**)

Risk factor	Categories	n	ESBL+ n (%)	Univariate p	Multivariate OR (95% CI)
Gender	Male	118**	80 (67.8)	0.032	1.12 (0.69-1.82)
	Female	130**	71 (54.6)		1
Antibiotic use in preceding 3 mo.	Yes	170	115 (67.6)	0.004	2.24 (1.34-3.74)*
	No	75	36 (48.0)		1
Urinary tract operation in preceding 6 mo.	Yes	51	40 (78.4)	0.005	2.17 (1.15-4.11)*
	No	195	111 (56.9)		1

*p< 0.005 *One case had mixed infection with E. coli and Klebsiella spp.