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. Author manuscript; available in PMC: 2013 Jan 1.

Published in final edited form as: Child Dev. 2011 Dec 21;83(1):337–350. doi: 10.1111/j.1467-8624.2011.01682.x

Table 5. Predicting Relative Change in Substance Use from Composite Variable Summarizing Peer Susceptibility Measures.

	Teen Substance Use (Age 16)
	β entry	β final	ΔR2	Total R²
Step I.
Target Teen Substance Use (Age 15)	.70^***	.71^***	.484^***	.484^***
Step II.
Gender (Male=1; Female =2)	-.06	-.01
Family Income	.09	.05
Summary Statistics for Step			.013	.497^***
Step III.
Peer Substance Use (Age 15)	.28^***	.18^**	.054^***	.551^***
Step IV.
Composite of Risk Factors for Susceptibility	-.05	-.02
Summary Statistics for Step			.001	.552^***
Step V.
Composite Susceptibility Risk X Peer Substance Use	.33^***	-.33^***
Summary Statistics for Step			.106^***	.658^***

Note.

^***

p < .001.

^**

p < .01.

^*

p < .05.