Table 3.
Summary of Hierarchical Regression Analysis for Variables Predicting Event Blood Alcohol Concentration (N = 324)
| Model 1 | Model 2 | Model 3 | Model 4 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Variable | B | SE B | β | B | SE B | β | B | SE B | β | B | SE B | β |
| Gender | 0.38 | 1.11 | 0.02 | 0.34 | 1.11 | 0.01 | −0.16 | 1.05 | −0.01 | −0.21 | 1.03 | −0.01 |
| Age | 0.34 | 0.70 | 0.03 | 1.31 | 0.65 | 0.10* | 0.87 | 0.61 | 0.06 | 1.02 | 0.60 | 0.08t |
| tBAC | 64.06 | 8.39 | 0.39*** | 61.04 | 7.71 | 0.38*** | 58.49 | 7.21 | 0.36*** | 56.75 | 7.11 | 0.35*** |
| Aversiveness | 0.80 | 0.36 | 0.11* | 0.76 | 0.34 | 0.10* | −0.03 | 0.40 | 0.00 | |||
| Responsibility | 2.47 | 0.32 | 0.37*** | 2.06 | 0.30 | 0.31*** | 1.95 | 0.30 | 0.29*** | |||
| Drinking Games | −0.14 | 1.03 | −0.14 | 0.12 | 1.02 | 0.01 | ||||||
| Pregaming | 7.89 | 1.14 | 0.31*** | 7.49 | 1.12 | 0.30*** | ||||||
| Aversiveness X Pregaming | 2.37 | 0.69 | 0.19*** | |||||||||
| R2 | .16 | .31 | .40 | .42 | ||||||||
| 19.73*** | 34.28*** | 24.17*** | 11.89*** | |||||||||
| F for change in R2 | ||||||||||||
Note: Age, tBAC (typical blood alcohol concentration), aversiveness, and responsibility were median centered; eBAC multiplied by 100 to increase interpretability of the unstandardized betas. Ten participants did not provide enough information to calculate eBAC and/or tBAC, and were excluded from the models. The regression models were conducted with all participants; parallel regression models with only participants who reported drinking on the night of the event revealed similar results. ** p < .01.
t
p ≤ .10.
*
p ≤ .05.
***
p ≤ .001.