Table 1.
Demographic, moderator, mediator, and outcome variables in the two intervention groups at baseline and 12 month follow up
| MI (N = 82) | FO (N = 90) | |
|---|---|---|
| M(SD) or n(%) | M(SD) or n(%) | |
| Male | 54 (65.9%) | 57 (63.3%) |
| Age | 20.6 (1.8) | 20.4 (1.9) |
| BAC in ED | .084 (.082) | .088 (.085) |
| Moderator Variables | ||
| Alcohol-Positive | 57 (69.5%) | 71 (78.9%) |
| AUDIT-Positive | 68 (82.9%) | 60 (66.7%) |
| Attribution about alcohol in the medical event | 2.8 (2.4) | 2.8 (2.3) |
| Aversiveness of the medical event | 4.4 (1.7) | 4.5 (1.7) |
| Perceived seriousness of the medical event | 2.9 (1.6) | 3.2 (1.7) |
| Readiness to change alcohol use | ||
| Baseline | 5.4 (2.8) | 5.6 (2.5) |
| Post-intervention | 6.3 (2.8) | 5.7 (2.5) |
| Mediator Variables | ||
| Perceived risk of drinking | ||
| Baseline | 40.3 (11.7) | 39.2 (11.7) |
| 6 months | 38.2 (13.0) | 36.9 (12.4) |
| Perceived benefit of drinking | ||
| Baseline | 15.2 (7.5) | 17.4 (9.3) |
| 6 months | 16.1 (8.4) | 17.0 (7.6) |
| Self-efficacy to resist drinking | ||
| Baseline | 71.1 (23.4) | 66.5 (21.0) |
| 6 months | 75.8 (22.4) | 73.7 (20.9) |
| Outcome Variables | ||
| Number of drinking days, past month | ||
| Baseline | 8.3 (6.5) | 7.7 (6.5) |
| 12 months | 4.4 (5.6) | 6.4 (6.4) |
| Number of heavy drinking days, past month | ||
| Baseline | 5.5 (6.0) | 4.3 (4.7) |
| 12 months | 2.6 (4.6) | 3.5 (4.3) |
| Ave. number of drinks per week, past month | ||
| Baseline | 13.2 (12.2) | 11.3 (11.6) |
| 12 months | 5.9 (8.4) | 8.9 (10.3) |
| RAPI Total | ||
| 12 monthsa | 29.3 (25.3) | 25.4 (20.3) |
| Alcohol-related injury | ||
| Baseline | 53 (76.8%) | 62 (78.5%) |
| 12-monthsa | 31 (44.9%) | 35 (44.3%) |
Note. AUDIT = Alcohol Use Disorders Identification Test. BAC = Blood Alcohol Concentration. ED = Emergency Department. FO = Feedback Only intervention group. MI = Motivational Interview intervention group. RAPI = Rutgers Alcohol Problems Index.
a
Follow-up values are combined from multiple follow-up assessments to reflect past year, so sample sizes vary due to missing data.