Table 3.

Cox-regression survival analysis of hazard rate (HR) at 5 days after onset of LOS symptoms

	Case—uninfected*			Case—suspected*			Suspect—uninfected*
Group	HR	95% CI	p Value	HR	95% CI	p Value	HR	95% CI	p Value
5 days ALL crude	5.5	2.4–12.8	< 0.001	4.5	1.9–10.7	0.001	1.2	0.3–4.9	0.76
5 days LOS crude	5.8	2.2–15.2	< 0.001	3.2	1.0–10.0	0.039	1.8	0.5–6.3	0.37
5 days LOS adjusted#	3.7	1.2–11.2	0.019	2.7	0.8–8.8	0.095	1.4	0.4–5.4	0.65

*Reference group

^#The analyses are adjusted for gestational age, gender, prenatal steroids, mechanical ventilation, and necrotizing enterocolitis (NEC)

The uninfected group is matched to the same days of life when the GNB-sepsis case was diagnosed