Table 2.
Results of Multilevel Growth Curve Models for Alcohol Demand and Craving
| Variable | B | SE B | β | t | p |
|---|---|---|---|---|---|
| Intensity | |||||
| Linear slope | −0.03 | 0.18 | −.01 | −0.16 | .87 |
| Quadratic slope | 0.00 | 0.05 | .00 | −0.01 | .99 |
| Alcohol (vs. no-alcohol) | 0.14 | 0.61 | .04 | 0.23 | .82 |
| Alcohol × Linear slope | 0.66 | 0.30 | .19 | 2.17 | .03 |
| Alcohol × Quadratic slope | −0.26 | 0.09 | −.08 | −3.00 | .003 |
| APT-Intensity | 0.38 | 0.09 | .45 | 4.42 | <.001 |
| Breakpoint | |||||
| Linear slope | −0.17 | 0.14 | −.05 | −1.14 | .26 |
| Quadratic slope | 0.00 | 0.04 | .00 | −0.02 | .98 |
| Alcohol (vs. no-alcohol) | 0.83 | 0.69 | .26 | 1.20 | .23 |
| Alcohol × Linear slope | 0.63 | 0.24 | .20 | 2.64 | .01 |
| Alcohol × Quadratic slope | −0.19 | 0.06 | −.06 | −3.15 | .002 |
| APT -Breakpoint | 0.24 | 0.07 | .33 | 3.55 | <.001 |
| Omax | |||||
| Linear slope | −0.48 | 0.50 | −.05 | −0.97 | .34 |
| Quadratic slope | −0.01 | 0.11 | .00 | −0.08 | .94 |
| Alcohol (vs. no-alcohol) | 1.38 | 2.23 | .15 | 0.62 | .54 |
| Alcohol × Linear slope | 1.58 | 0.82 | .17 | 1.93 | .06 |
| Alcohol × Quadratic slope | −0.52 | 0.19 | −.06 | −2.74 | .007 |
| APT -Omax | 0.26 | 0.12 | .22 | 2.16 | .03 |
| Craving | |||||
| Linear slope | −2.16 | 2.69 | −.09 | −0.80 | .43 |
| Quadratic slope | 0.52 | 0.62 | .02 | 0.83 | .41 |
| Alcohol (vs. no-alcohol) | 5.42 | 5.77 | .32 | 0.94 | .35 |
| Alcohol × Linear slope | 9.57 | 4.32 | .39 | 2.22 | .03 |
| Alcohol × Quadratic slope | −3.02 | 1.00 | −.12 | −3.03 | .003 |
Note: APT = alcohol purchase task; No alcohol (placebo + control) group served as reference group for comparison with the alcohol group in all analyses. Models controlled for alcohol problems (YAACQ total score) and drinking quantity.