. Author manuscript; available in PMC: 2015 Aug 1.

Published in final edited form as: Infant Behav Dev. 2014 Jun 20;37(3):398–405. doi: 10.1016/j.infbeh.2014.05.008

Table 4.

Hierarchical Linear Regression of Infant Gender, Number of Children, Gender x BDI-II Category Interaction, and BDI-II Severity Category on Bayley Expressive Communication (EC) Percentiles

		Model 1			Model 2			Model 3			Model 4
Variable	B	SE B	β	B	SE	β	B	SE B	β	B	SE B	β
Gender	−5.45	2.53	−.24^*	−3.40	2.58	−.15	−2.18	4.42	−.10	−2.41	4.31	−.11
# Children				−6.05	2.44	−.28^*	−5.97	2.46	−.28^*	−4.50	2.48	−.21
Gender x BDI							−0.09	2.67	−.07	−0.75	2.60	−.05
BDI Category										−7.78	3.44	−.25^*
R²		.056			.126			.127			.183
F for ΔR²		4.64^*			6.16^*			0.11			5.12^*

p = .05