Infections Caused by Extended-Spectrum β-Lactamase Producing Escherichia Coli in Systemic Lupus Erythematosus Patients: Prevalence, Risk Factors, and Predictive Model

Table 1

Samples distribution of ESBL producing and non-ESBL producing strains, n(%).

Specimen type	Total	ESBL (+)	ESBL (-)	P value
	n=384	n=212	n=172
Sputum	76	42 (19.8)	34 (19.8)	0.994
ETA	20	14 (6.6)	6 (3.5)	0.522
BALF	34	20 (9.4)	14 (8.1)	0.754
Urine	174	94 (44.3)	80 (46.5)	0.038
Wound secretion	20	10 (4.7)	10 (5.8)	0.989
Pus	12	4 (3.8)	4 (2.3)	0.876
Blood	48	24 (11.3)	24 (14)	0.583

BALF, bronchoalveolar lavage fluid; ETA, endotracheal aspirate; ESBL, Extended-Spectrum -Lactamase.