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. Author manuscript; available in PMC: 2015 Nov 23.

Published in final edited form as: Subst Abus. 2014 Sep 26;36(4):470–477. doi: 10.1080/08897077.2014.964901

TABLE 2.

Statistics for the 4-group model of marijuana use

Parameter		Estimate (Standard Error)
Parameter		No or low marijuana use	Increasing marijuana use	Moderate marijuana use	Chronic marijuana use
Marijuana use	Intercept	−5.90 (0.50) ^***	−3.79 (0.65) ^***	−4.03 (0.57) ^***	−3.71 (0.56) ^***
	Slope	4.18 (0.64) ^***	5.91 (0.62) ^***	4.68 (0.52) ^***	7.34 (0.51) ^***
	Quadratic coefficient	−1.21 (0.17) ^***	−1.35 (0.16) ^***	−1.08 (0.13) ^***	−1.74 (0.12) ^***

Note. *** p<.001