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. Author manuscript; available in PMC: 2016 Jul 1.
Published in final edited form as: Alcohol Clin Exp Res. 2015 May 29;39(7):1253–1259. doi: 10.1111/acer.12759

Table 1.

Subgroup Comparison: Odds Ratio for PS1HDD (percentage of subjects with at most heavy drinking days) in month 3 of follow up.

Method Number OR P-Value
TRM* 57 5.0 0.015
Virtual Twins 88 3.8 0.017
Interaction Tree 118 2.1 0.059
*

TRM: traditional regression method.