Table 3. SAS GEE Models Alcohol Outcomes.
| Dependent Variable | Predictor | Model coefficient | SE | Effect Size d/OR/IRR | 95% CI | p value |
|---|---|---|---|---|---|---|
| Number of heavy drinking days (NHDD)1 | ||||||
| Female (vs. male) | -0.349 | 0.109 | 0.706 | 0.570, 0.875 | 0.001 | |
| Baseline NHDD | 0.072 | 0.006 | 1.074 | 1.061, 1.088 | 0.000 | |
| Site 2 (vs. Site 1) | -0.299 | 0.111 | 0.741 | 0.597, 0.921 | 0.007 | |
| MI (vs. BA) | -0.234 | 0.114 | 0.791 | 0.633, 0.990 | 0.041 | |
| Time (Centered) | -0.094 | 0.046 | 0.91 | 0.833, 0.995 | 0.039 | |
| Time × MI int. | 0.102 | 0.094 | 1.107 | 0.921, 1.332 | 0.279 | |
| Log, Avg # drinks per week (LDKWK)2 | ||||||
| Female (vs. male) | -0.143 | 0.045 | -0.265 | -0.429, -0.100 | 0.002 | |
| Baseline LDKWK | 0.456 | 0.048 | 0.846 | 0.673, 1.018 | 0.000 | |
| Site 2 (vs. Site 1) | -0.074 | 0.044 | -0.138 | -0.299, 0.022 | 0.090 | |
| MI (vs. BA) | -0.090 | 0.044 | -0.167 | -0.328, -0.006 | 0.042 | |
| Time (Centered) | -0.065 | 0.020 | -0.120 | -0.193, -0.048 | 0.001 | |
| Time × MI int. | 0.018 | 0.029 | 0.034 | -0.072, 0.140 | 0.531 | |
| CDC Excessive drinking (CDC)3 | ||||||
| Female (vs. male) | -0.188 | 0.207 | 0.828 | 0.552, 1.243 | 0.363 | |
| Baseline CDC | 1.565 | 0.207 | 4.781 | 3.178, 7.171 | 0.000 | |
| Site 2 (vs. Site 1) | -0.588 | 0.204 | 0.555 | 0.372, 0.828 | 0.004 | |
| MI (vs. BA) | -0.604 | 0.209 | 0.547 | 0.363, 0.824 | 0.004 | |
| Time (Centered) | -0.071 | 0.100 | 0.931 | 0.766, 1.133 | 0.478 | |
| Time × MI int. | -0.089 | 0.154 | 0.915 | 0.677, 1.238 | 0.566 | |
| FDA Heavy drinking (FDA)3 | ||||||
| Female (vs. male) | -0.320 | 0.192 | 0.726 | 0.498, 1.059 | 0.096 | |
| Baseline NHDD | 1.048 | 0.268 | 2.853 | 1.688, 4.821 | 0.000 | |
| Site 2 (vs. Site 1) | -0.185 | 0.190 | 0.832 | 0.573, 1.207 | 0.332 | |
| MI (vs. BA) | -0.178 | 0.190 | 0.837 | 0.576, 1.215 | 0.350 | |
| Time (Centered) | -0.272 | 0.099 | 0.762 | 0.628, 0.924 | 0.006 | |
| Time × MI int. | 0.001 | 0.151 | 1.001 | 0.744, 1.347 | 0.994 | |
| Short Inventory of Problems (SIP)2 | ||||||
| Female (vs. male) | -0.265 | 0.334 | -0.062 | -0.214, 0.091 | 0.429 | |
| Baseline SIP | 0.480 | 0.045 | 0.112 | 0.092, 0.132 | 0.000 | |
| Site 2 (vs. Site 1) | -0.605 | 0.330 | -0.141 | -0.292, 0.010 | 0.067 | |
| MI (vs. BA) | -0.602 | 0.326 | -0.140 | -0.289, 0.009 | 0.065 | |
| Time (Centered) | -0.522 | 0.139 | -0.122 | -0.185, -0.058 | 0.000 | |
| Time × MI int. | 0.328 | 0.201 | 0.076 | -0.015, 0.168 | 0.103 | |
1
Count variable analyzed using negative binomial distribution; effect size is the incidence rate ratio.
2
Normally distributed variable; effect size is in standardized units of the dependent variable (d).
3
Dichotomous variable; effect size is expressed as an odds ratio.