. Author manuscript; available in PMC: 2017 Jan 1.

Published in final edited form as: Autism. 2015 Feb 6;20(1):26–36. doi: 10.1177/1362361314566049

Table 1.

Maternal exposure to injurious partner violence during pregnancy and any lifetime intimate partner abuse and demographic factors, Nurses’ Health Study II, 1963–2002, United States.

		Injurious physical abuse during pregnancy		Lifetime intimate partner abuse (before or after index birth)

		Any (n=1,343)	None (n=53,725)	Any (n=26,501)	None (n=28,402)
Male sex	%	48.9	49.1	49.4	48.8
Birth year	Mean (SD)	1979 (7.3)^***	1984 (7.4)	1983 (7.6)^***	1984 (7.2)
Maternal age at birth, years	Mean (SD)	25.2 (5.3)^***	28.7 (5.0)	28.3 (5.4)^***	29.0 (4.7)
Maternal childhood socioeconomic status (range: 1 to 6, 6 is highest status)	Mean (SD)	3.0 (1.0)^***	3.2 (0.9)	3.1 (1.0)^***	3.2 (1.0)

χ² or 2-sided t-test significant at

P<0.05,

^**

P<0.01,

^***

P<0.001

SD: Standard deviation