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. Author manuscript; available in PMC: 2009 Feb 1.
Published in final edited form as: Addict Behav. 2007 Sep 8;33(2):252–265. doi: 10.1016/j.addbeh.2007.09.004

Table 4.

Testing whether impulsivity mediates the gender effect on alcohol problems.

Testing steps in mediation model B SE B β p
Step 1
 Outcome: AlcProb
 Predictor: Gender -0.69 .30 -2.29 .02
Step 2
 Outcome: BIST
 Predictor: Gender -0.58 .14 -4.09 .000
Step 3
 Outcome: AlcProb
 Mediator: BIST 0.45 .16 2.80 .005
 Predictor: Gender -0.44 .32 -1.38 .17

Note: AlcProb = Alcohol Problem status (i.e. MAST score > 2); BIST = Barrat Impulsiveness Scale Total score. Gender was dummy coded 0 = Men, 1 = Women. Testing Steps 1 and 3 used logistic regression and Testing Step 2 used linear regression.