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. Author manuscript; available in PMC: 2014 Apr 1.
Published in final edited form as: Drug Alcohol Depend. 2013 Nov 5;134:290–295. doi: 10.1016/j.drugalcdep.2013.10.026

Table 1.

Drinking quantity and frequency at baseline and 60-day appointment by level of baseline motive variables: Data from a large primary care clinic in the urban northeast, 2007–2010 (N=240).

Drinking motive Drinks per drinking day: Unadjusted mean (SD) Percent days abstinent: Unadjusted mean (SD)
At/below median motive score Above median motive score IRR At/below median motive score Above median motive score IRR
Baseline 60 days Baseline 60 days Baseline 60 days Baseline 60 days
To cope with negative affect 6.37 (3.50) 3.50 (2.00) 7.67 (4.09) 4.74 (3.25) 1.15* 70.49 (22.69) 86.22 (16.51) 65.38 (25.85) 80.70 (24.95) 0.97
For social facilitation 6.57 (3.57) 4.13 (2.85) 7.43 (4.07) 4.11 (2.69) 1.01 68.51 (24.28) 86.05 (17.94) 67.65 (24.43) 80.98 (23.79) 0.98
In response to social pressure 6.95 (3.77) 4.14 (2.74) 7.04 (3.96) 4.10 (2.81) 0.99 66.33 (25.31) 83.06 (20.79) 71.01 (22.38) 84.47 (21.64) 0.99

Note. Higher values for drinks per drinking day indicate heavier consumption; lower values for percent days abstinent indicate more frequent consumption. IRR=Incidence Rate Ratios for models testing whether (continuous) baseline motives predict drinking at 60 days, using generalized linear models controlling for intervention condition, baseline drinking, age, ethnicity, gender, education, preferred language, HIV medication status, and the number of years since HIV diagnosis.

*

indicates significance at p < 0.01; the risk ratio of 1.15 can be interpreted such that each unit increase in the cope motive is associated with a 15% increase in drinking rate.