Table 3.
Summary of GEE Model Predicting Hangover Severity as a Function of the Within-person Prior Day’s Drinking Volume by Age Group
| 95% CI |
|||||
|---|---|---|---|---|---|
| Model | β | SE | LL | UL | p |
| Within-person prior day drinking volume | 0.33 | 0.04 | 0.25 | 0.41 | < .001 |
| 15 to 24 (reference) | ― | ― | ― | ― | ― |
| 25 to 34 | −0.21 | 0.16 | −0.53 | −0.11 | .192 |
| 35 to 66 | −0.35 | 0.14 | −0.64 | −0.07 | .015 |
| 15 to 24 × Within-person prior day drinking volume (reference) | ― | ― | ― | ― | ― |
| 25 to 34 × Within-person prior day drinking volume | −0.17 | 0.07 | −0.31 | −0.03 | .015 |
| 35 to 66 × Within-person prior day drinking volume | −0.24 | 0.06 | −0.36 | −0.12 | < .001 |
Note: GEE = generalized estimating equation; SE = standard error; CI = confidence interval; LL = lower limit; UL = upper limit