. Author manuscript; available in PMC: 2013 Jul 31.

Published in final edited form as: Drug Alcohol Depend. 2012 Mar 22;123(0 1):S52–S58. doi: 10.1016/j.drugalcdep.2012.02.014

Table 4.

Correlations between Mokken scales for alcohol, tobacco and marijuana

	Alcohol Positive	Alcohol Negative	Tobacco Positive	Tobacco Negative	Marijuana Positive	Marijuana Negative
Alcohol Positive	--	0.23^* (1110)	0.32^* (946)	0.24^* (951)	0.41^* (1014)	0.23^* (1014)
Alcohol Negative	0.30^* (3740)	--	0.14^* (946)	0.29^* (952)	0.21^* (1014)	0.44^* (1015)
Tobacco Positive	0.31^* (2217)	0.15^* (2218)	--	0.18^* (948)	0.24^* (896)	0.17^* (896)
Tobacco Negative	0.22^* (2214)	0.27^* (2216)	0.17^* (2264)	--	0.19^* (901)	0.22^* (902)
Marijuana Positive	0.41^* (2159)	0.21^* (2158)	0.25^* (1723)	0.20^* (1722)	--	0.06 (1024)
Marijuana Negative	0.23^* (2161)	0.46^* (2161)	0.19^* (1724)	0.22^* (1724)	0.05 (2226)	--

p<0.00