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. Author manuscript; available in PMC: 2011 Feb 1.

Published in final edited form as: J Abnorm Child Psychol. 2010 Feb;38(2):211–224. doi: 10.1007/s10802-009-9360-y

Table 1.

Fit Statistics for Linear, Quadratic, and Cubic Models of Time Representing Age at First Substance Use and Time to First Substance-Related Problem

	Age at first use						Time to first problem
	Alcohol		Tobacco		Marijuana		Alcohol		Tobacco		Marijuana
	AIC	SC	AIC	SC	AIC	SC	AIC	SC	AIC	SC	AIC	SC
Linear	2671.97	2684.95	2245.17	2258.62	2202.76	2216.32	858.82	872.19	1026.82	1039.44	672.27	684.94
Quadratic	2661.94	2681.42	2208.37	2228.56	2023.30	2043.65	804.56	824.62	1001.56	1020.50	635.60	654.61
Cubic	2658.08	2684.04	2185.42	2212.33	2012.38	2039.51	803.69	830.44	996.58	1021.82	634.16	659.51

AIC Akaike's information criterion; SC Schwarz criterion