TABLE 2

Birth and Infancy Characteristics: Bivariate Multinomial Logistic Regressions With Weight Status in Children Aged 2 to 5 Years, NHANES 1999–2014

	n (%)^a	NW (<85th Percentile), n = 3907		OW (85th Percentile–94.9th Percentile), n = 676		Obesity (≥95th Percentile–1.2 × 95th Percentile), n = 510		SO (≥1.2 × 95th Percentile), n = 123
		n (%)	OR^b (95% CI)	n (%)	OR (95% CI)	n (%)	OR (95% CI)	n (%)	OR (95% CI)
Low birth wt (<2500 g)	678 (8.5)	561 (9.3)	Ref	57 (5.2)	0.6^* (0.4 to 0.9)	45 (5.8)	0.7 (0.4 to 1.5)	15 (12.2)	1.0 (0.5 to 2.0)
Normal birth wt (2500–4000 g)	5598 (81.8)	4219 (82.2)	Ref	746 (82.6)	Ref	511 (77.9)	Ref	122 (78.6)	Ref
HBW (>4000 g)	591 (9.7)	391 (8.5)	Ref	98 (12.2)	1.2 (0.9 to 1.7)	100 (16.3)	2.0^* (1.5 to 2.8)	17 (9.2)	1.1 (0.5 to 2.4)
Mother smoked during pregnancy	928 (16.5)	677 (14.0)	Ref	126 (15.0)	1.1 (0.8 to 1.4)	103 (18.2)	1.4^* (1.0 to 1.9)	22 (20.8)	1.6 (0.9 to 2.8)
Never breastfed	2430 (30.7)	1777 (29.3)	Ref	328 (31.3)	1.1 (0.9 to 1.3)	255 (38.9)	1.5^* (1.2 to 2.0)	70 (44.0)	1.9^* (1.3 to 2.8)

Ref, reference.
↵a All N’s and n’s listed are unweighted (raw) and all proportions are survey-weighted.
↵b Unadjusted ORs from multinomial logistic regression.
↵* P < .05.