. Author manuscript; available in PMC: 2009 Dec 1.

Published in final edited form as: Dev Psychobiol. 2008 Dec;50(8):819–834. doi: 10.1002/dev.20334

Table 4.

Hierarchical Linear Regression Models – Mediational Analyses

Predictor Variables	Unstandardized Coefficients Beta	S.E.	Standardized Beta	R²	F
Maternal Hostility
Regression 1: Outcome – Hostility
Smokers vs. Nonsmokers	.46	.149	.348^***	.27	4.35^***
Regression 2: Outcome – Peak Reactivity
Smokers vs. Nonsmokers	.115	.045	.26^*	.07	6.68^*
Prenatal Alcohol Exposure
Regression 3: Outcome – Prenatal Alcohol Exposure
Smokers vs. Nonsmokers	.39	.195	.24^*	.20	2.91^*
Regression 4: Outcome – Pretask Cortisol
Smokers vs. Nonsmokers	.074	.032	.244^*	.06	5.52^*

Regression 5: Outcome – Peak Cortisol Reactivity
Smokers vs. Nonsmokers	.19	.04	.461^***	.21	22.88^***

p < 0.05

^**

p < 0.01

^***

p < 0.001