TABLE 4.

Association of Maternal Self-Reported Prepregnancy BMI and Weekly Weight Gain Categories With Neonatal, Post neonatal, and Infant Deaths

Maternal Prepregnancy BMI (kg/m²)	Weight Gain During Pregnancy (kg/wk)	Neonatal Death OR (95% CI)	Post neonatal Death OR (95% CI)	Infant Death OR (95% CI)
<18.5	<0.15	4.51 (2.74–7.40)	3.47 (1.88–6.40)	4.07 (2.57–6.46)
	0.15–0.29	1.75 (1.28–2.38)	1.72 (1.22–2.43)	1.74 (1.34–2.27)
	0.30–0.44	1.34 (0.98–1.84)	1.30 (0.92–1.84)	1.33 (1.02–1.73)
	≥0.45	1.32 (0.94–1.86)	0.76 (0.49–1.18)	1.07 (0.79–1.45)
18.5–24.9	<0.15	3.10 (2.49–3.87)	1.97 (1.51–2.55)	2.59 (2.13–3.15)
	0.15–0.29	1.42 (1.20–1.69)	1.12 (0.92–1.36)	1.29 (1.12–1.49)
	0.30–0.44^a	1.00	1.00	1.00
	≥0.45	1.18 (0.99–1.41)	0.95 (0.78–1.16)	1.08 (0.94–1.26)
25–29.9	<0.15	2.23 (1.64–3.04)	1.19 (0.81–1.75)	1.77 (1.35–2.33)
	0.15–0.29	1.36 (1.05–1.76)	0.95 (0.70–1.29)	1.18 (0.95–1.48)
	0.30–0.44	1.17 (0.88–1.55)	1.40 (1.04–1.90)	1.26 (0.99–1.59)
	≥0.45	1.63 (1.25–2.14)	1.17 (0.85–1.62)	1.44 (1.14–1.82)
≥30	<0.15	2.17 (1.53–3.07)	1.22 (0.79–1.88)	1.75 (1.28–2.39)
	0.15–0.29	1.44 (1.03–2.02)	1.36 (0.92–2.01)	1.42 (1.07–1.89)
	0.30–0.44	1.82 (1.10–3.00)	1.31 (0.75–2.29)	1.59 (1.00–2.51)
	≥0.45	3.50 (2.34–5.25)	1.99 (1.21–3.29)	2.87 (1.98–4.16)

Adjusted for race, maternal age at pregnancy, maternal education, maternal smoking during pregnancy, child’s sex, live birth order, and plurality.

Reference category.