Table 5:

Multivariable analysis of neonatal outcomes by Healthy Eating Index quartile

	HEI Q1 aRR (95% CI)	HEI Q2 aRR (95% CI)	HEI Q3 aRR (95% CI)	HEI Q4
Preterm (<37 weeks)	1.27 (1.01–1.60)	1.12 (0.90–1.40)	1.02 (0.81–1.27)	Ref
NICU admission	1.22 (1.04–1.42)	1.23 (1.06–1.42)	1.19 (1.03–1.38)	Ref
Small for gestational age (<10%ile)	1.24 (1.02–1.51)	1.11 (0.92–1.34)	0.91 (0.4–1.11)	Ref
Low birth weight <2500g	1.32 (1.02–1.71)	1.10 (0.85–1.42)	0.89 (0.68–1.16)	Ref
Macrosomia >4000g	0.60 (0.47–0.76)	0.78 (0.63–0.96)	0.85 (0.70–1.03)	Ref

Data displayed as adjusted relative risk (95% confidence interval), estimated through a Poisson regression model.

HEI, Healthy Eating Index; quartile 4 represents the best quality of periconceptional diet and is the referent. NICU, neonatal intensive care unit

Adjusted for age, body mass index, tobacco use, chronic hypertension, pregestational diabetes mellitus, and mental health disorder.