Low birthweight, prematurity, and intrauterine growth restriction: results from the baseline data of the first indigenous birth cohort in Brazil (Guarani Birth Cohort)

Table 4 Final hierarchical multivariate logistic regression model for risk factors for LBW, prematurity, and IUGR. Baseline of the Guarani Birth Cohort, South and Southeast Brazil, 2014–2016

Level	Domains	Variables	OR^a (95%CI)	p-value
	Low birthweight
1	Household characteristics	Brick and mortar housing
		No	1.00
		Yes	0.25 (0.07–0.84)	0.025
1	Maternal characteristics	Maternal age (years)
		< 20	2.39 (1.29–4.44)	0.006
		20 to 34	1.00
		≥ 35	1.15 (0.36–3.61)	0.815
3	Maternal nutrition	Chronic anemia before pregnancy
		No	1.00
		Yes	6.41 (1.70–24.16)	0.006
	Prematurity
1	Household characteristics	Principal energy source for cooking
		Gas stove	1.00
		Wood burning stove	3.87 (1.71–8.78)	0.001
		Bonfire	2.57 (1.31–5.01)	0.006
	Intrauterine growth restriction
2	Reproductive variables	Parity
		Multiparous	1.00
		Primiparous	4.66 (1.68–12.95)	0.003
3	Maternal nutrition	Chronic anemia before pregnancy
		No	1.00
		Yes	7.21 (1.29–40.38)	0.025

Note: ^aadjusted OR Each variable’s effect on the outcome was adjusted for the other variables at the same hierarchical level that remained with p < 0.05 at the end of the multivariate analysis of the respective level and for the variables that remained from the previous levels. The odds ratios refer to the sizes of adjusted associations reached at entry level of each of these variables in the hierarchical model

ISSN: 1471-2393