. Author manuscript; available in PMC: 2013 Sep 16.

Published in final edited form as: Addict Behav. 2009 Dec 3;35(4):331–336. doi: 10.1016/j.addbeh.2009.11.005

Table 4.

LDQ Factor Structure by Gender and Primary Substance

	Factor 1 Eigenvalue	Factor 2 Eigenvalue	% of Variance Factor 1	% of Variance Factor 2	Total % Variance Accounted for
Males	6.46	---	64.61	---	64.61
Females	5.24	1.11	52.41	11.08	63.49
Alcohol & Cannabis	6.03	---	60.27	---	60.27
Opiates & Stimulants	5.63	---	56.26	---	56.26