Table 4.
Fixed effect estimates for the discontinuous hierarchical linear modeling models for typical drinks per week, drinks per drinking day, heavy drinking days, peak BAC, and RAPI score
| a | b | c | d | e | ||
|---|---|---|---|---|---|---|
| Drinks per week | Drinks per day | Heavy drinking days | Peak BAC | RAPI | ||
| A | Baseline Intercepts | 23.04 (7.99) | 6.53 (1.58) | 7.97 (3.23) | 0.200 (.064) | 7.35 (4.87) |
| B | Gender (0 = Male, 1= Female) | −6.64 | −1.51 | −1.31 | 0.015 | 0.03 |
|
| ||||||
| C | Control Slope | −0.24 (0.41) | −0.07 (0.13) | −0.12 (0.07) | −0.002 (.003) | −0.22 (0.19) |
|
| ||||||
| Intervention Intercepts | ||||||
| D | TLFB Intercept | −3.03 (3.21) | −0.44 (1.26) | −0.84 (0.78) | −0.021 (.039) | 0.09 (3.04) |
| Model A: | ||||||
| E | Combined BMI Intercept | −1.95 | −0.48 | −0.98 | −0.023 | −1.21 |
| Model B: | ||||||
| F | Basic BMI Intercept | −2.66 | −0.66 | −1.30 | −0.032 | −1.33 |
| G | Enhanced BMI Intercept | −1.22 | −0.30 | −0.64 | −0.014 | −1.08 |
|
| ||||||
| H | Intervention Slope | 0.35 | 0.06 | 0.18 | 0.002 | 0.17 |
Note. All estimates are significant at p < .05 except for underlined estimates, which are not significant. Values in parentheses are estimated standard deviations of random effects at Level–2. Model A refers to the model in which both brief motivational interventions (BMIs) are combined and entered as one factor; Model B refers to the model in which the Basic and Enhanced BMIs are entered as separate factors. BAC = blood alcohol concentration; RAPI = Rutgers Alcohol Problems Index; TLFB = Timeline Followback interview.