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. Author manuscript; available in PMC: 2015 Mar 1.
Published in final edited form as: J Subst Abuse Treat. 2013 Oct 14;46(3):382–389. doi: 10.1016/j.jsat.2013.10.009

Table 3.

Random Effects Tobit Regression Model of the Log of the Number of Drinks per Day During Postpartum (n=251)

Variable Coefficient Standard Error P Value 95% Confidence Interval
Intervention effect - prenatal -- -- -- --
Intervention effect – postpartum −0.109 0.060 0.069 (−0.227, 0.008)
Log drinking volume at baseline −0.010 0.083 0.900 (−0.174, 0.153)
Age −0.004 0.007 0.611 (−0.017, 0.010)
White −0.237 0.065 <0.001 (−0.364, −0.109)
Smoker 0.154 0.063 0.015 (0.030, 0.277)
Depression −0.001 0.006 0.934 (−0.013, 0.012)
First pregnancy −0.128 0.074 0.086 (−0.273, 0.018)
Education 0.024 0.014 0.087 (−0.004, 0.052)
# of intervention sessions −0.050 0.027 0.062 (−0.103, 0.003)