Table 3.

Multivariate analysis comparing NEC‐III to NEC‐II and non‐NEC.

	NEC‐III versus NEC‐II		NEC‐III versus non‐NEC
Variable	Adjusted OR (95% CI)	p Value	Adjusted OR (95% CI)	p Value
UAC in place for >5 days	5.57 (1.65–18.73)	0.006	3.8 (1.05–13.66)	0.041
Rupture of membranes >1 week	11.74 (1.14–120.34)	0.038	6.93 (1.56–30.69)	0.041

Abbreviations: CI, confidence interval; NEC‐III, necrotizing enterocolitis stage III; NEC‐II, necrotizing enterocolitis stage II; non‐NEC, non‐necrotizing enterocolitis; OR, odds ratio; UAC, umbilical arterial catheter.