. Author manuscript; available in PMC: 2018 Aug 1.

Published in final edited form as: Matern Child Health J. 2017 Aug;21(8):1616–1626. doi: 10.1007/s10995-016-2251-2

Table 3.

Infant Risk of Preterm Birth and Preterm Birth Subgroups by Mothers’ Preterm Birth and Gestational Age: an Intergenerational Study, Allegheny County, Pennsylvania

	Infant PTB risk		Infant LPTB risk		Infant EPTB risk
	OR	95% CI	RRR	95% CI	RRR	95% CI

All
Preterm birth mothers^a ^c	1.46	1.08, 1.98	1.46	1.04, 2.04	1.46	0.80, 2.69
Non-Hispanic white
Preterm birth mothers^b ^c	1.24	0.77, 2.00	1.20	0.71, 2.03	1.46	0.52, 4.13
Non-Hispanic black
Preterm birth mothers^b ^c	1.63	1.10, 2.43	1.68	1.07, 2.64	1.47	0.69, 3.12

Adjusted for mothers’ race, maternal age, marital status, educational attainment, health insurance, intergenerational neighborhood racial composition and poverty

Adjusted for maternal age, marital status, educational attainment, health insurance, intergenerational neighborhood racial composition and poverty

Preterm versus term mothers