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. Author manuscript; available in PMC: 2011 May 9.

Published in final edited form as: Alcohol Clin Exp Res. 2009 Dec 17;34(3):545–554. doi: 10.1111/j.1530-0277.2009.01120.x

Table 6.

Additive Genetic and Unique Environmental Correlations^a Between Alcohol and Cannabis Use and Dependence Symptoms^b

	Alcohol		Cannabis
	Dependence symptoms	Consumption	Dependence symptoms	Use
Alcohol
Dep symptoms	–	0.546	0.246	0.230
Consumption	0.953	–	0.250	0.298
Cannabis
Dep symptoms	0.613	0.655	–	0.889
Use	0.621	0.675	0.979	–

^a

Genetic correlations are shown below the diagonal; correlations between unique environmental factors are shown above the diagonal.

^b

Under the best-fitting quadrivariate model.

Dep, dependence.