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. Author manuscript; available in PMC: 2011 Sep 13.
Published in final edited form as: Adv Appl Stat Sci. 2010 Oct;3(2):203–235.

Table 6.

Parameter Estimates and Odds Ratios for Alcohol or Drug Treatment as a Covariate Predicting Time 1 Latent Class Membership

β Odds Ratio
Non-users — 1.00
Smokers 2.30 9.93
Moderate Drinkers/Smokers −0.28 0.76
CCH Users 2.32 10.18

Note: CCH is crack, cocaine or heroin. Dash indicates the reference latent class.