Perinatal colonization with extended-spectrum beta-lactamase-producing and carbapenem-resistant Gram-negative bacteria: a hospital-based cohort study

Table 5 Association of hospital-based exposures with maternal and newborn colonization with ESBL-producing and carbapenem resistant bacteria

Post-delivery CRB				Newborn ESBL-PB
	RR	95% CI	p-value		RR	95% CI	p-value
Delivery mode				Delivery mode
Vaginal delivery	Ref			Vaginal delivery	Ref
Cesarean delivery	1.31	1.08–1.59	0.01	Cesarean delivery	1.34	1.09–1.64	0.01
Maternal complications at the time of delivery	1.13	1.03–1.24	0.01	Maternal pre-delivery CRB colonization	1.15	1.09–1.21	< 0.001
Mother received third-generation cephalosporin antibiotics	0.96	0.93-1.00	0.05

Multivariable regression analyses include all non-collinear variables with p < 0.2 and at least 10% prevalence. Maternal colonization post-delivery was not included in newborn results to avoid controlling for maternal factors that could mask associations. Results in bold have p < 0.05 level. RR = relative risk; ESBL-PB = organisms recovered from agar selective for extended-spectrum beta-lactamase-producing bacteria; CRB = organisms recovered from agar selective for carbapenem resistant bacteria

ISSN: 2047-2994