Severe lower respiratory tract infection in infants and toddlers from a non-affluent population: viral etiology and co-detection as risk factors

Table 3 Univariate analyses of risk factors for length of hospital stay and days with supplemental oxygen (n = 260)

	Length of hospital stay			Days with supplemental oxygen
	β*	(95% CI)	p	β*	(95% CI)	p
Sex, female	0.4	(-0.9 - 1.7)	0.553	0.5	(-0.6 - 1.7)	0.372
Age, <6 months	3.8	(2.7 - 5)	<0.001	3.8	(2.8 - 4.9)	<0.001
Prematurity	0.4	(-1.0 - 1.9)	0.570	0.4	(-1.0 - 1.7)	0.605
Maternal smoking during pregnancy	1.2	(-0.2 - 2.6)	0.106	1.3	(-0.02 - 2.7)	0.054
Family Hx asthma	2.4	(1.2 - 3.6)	<0.001	2.4	(1.3 - 3.5)	<0.001

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