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

Published in final edited form as: Demography. 2016 Feb;53(1):1–26. doi: 10.1007/s13524-015-0443-9

Table 1.

Weighted distribution of family composition and mean aggressive behavior at age 4 (ECLS-B, 2001-2006/7, N~6550)

	Proportion of all children	Proportion of children with step/half-siblings	Aggressive Behavior Score

			Mean	SD
Overall	1.000		8.807	4.446
Bio father/no step/half-sibs	0.645		8.353	4.116
Stepfather/no step/half-sibs	0.029		8.989	4.341
No father/no step/half-sibs	0.154		9.500	5.040	^a
Bio father/any step-half sibs	0.089	0.516	9.345	4.397	^a
Stepfather/any step-half sibs	0.027	0.157	10.563	5.487	^a,b,c
No father/any step-half sibs	0.056	0.327	10.343	5.121	^a,b,c

different from biological father, no step/half sibs, p<.05

different from biological father, any step/half sibs, p<.05

different from no biological father, no step/half sibs, p<.05