Table 3.
Zero-inflated Poisson Regression Models Predicting Average Number of Drinks per Week from ADHD Symptoms and UPPS Impulsivity Dimensions.
| Independent Variable (Standardized) | Model 1 ExpB (95% CI) | Model 2 ExpB (95% CI) |
|---|---|---|
| CAARS Inattentive (zero inflation) | 0.96 (0.68-1.35) | 0.98 (0.61-1.56) |
| CAARS Hyperactive (zero inflation) | 1.82*** (1.28-2.58) | 1.32 (0.87-1.99) |
| UPPS Negative Urgency (zero inflation) | 1.02 (0.72-1.47) | |
| UPPS Sensation Seeking (zero inflation) | 1.56** (1.15-2.09) | |
| UPPS (lack of) Premeditation (zero inflation) | 1.43 (0.97-1.97) | |
| UPPS (lack of) Perseverance (zero inflation) | 1.02 (0.66-1.55) | |
| CAARS Inattentive | 1.09*** (1.03-1.13) | 1.15*** (1.07-1.23) |
| CAARS Hyperactive | 1.19*** (1.13-1.25) | 1.02 (0.95-1.08) |
| UPPS Negative Urgency | 1.12*** (1.05-1.19) | |
| UPPS Sensation Seeking | 1.07** (1.02-1.12) | |
| UPPS (lack of) Premeditation | 1.27*** (1.21-1.33) | |
| UPPS (lack of) Perseverance | 0.84*** (0.79-0.89) |
*p < .05
**
p < .01
***
p < .001
Note. CAARS = Conners Adult ADHD Rating Scale; UPPS = Urgency Premeditation Perseverance Sensation Seeking Scale. Effect sizes comparable to R2 are not available in zero-inflated poisson regression; however, estimated percent change is described in the text for each significant predictor. Parenthetical values are 95% confidence intervals.