Table 4.
Outcomes by group status during the 26-week follow-up period [N=112).
| Variable | MBRP-A group (N=57) | Control group (N=55) | p value1 | Cohen’s d | p value2 (repeated measures) |
|---|---|---|---|---|---|
| Interval Addiction Treatment History | |||||
| # Detoxification Episodes, mean (SD) | |||||
| 8-week follow-up | 0.02 (0.1) | 0.1 (0.4) | 0.089 | 0.27 | - |
| 26-week follow-up | 0.1(0.3) | 0.06 (0.3) | 0.339 | −0.13 | |
| # Residential Treatment Episodes, mean (SD) | |||||
| 8-week follow-up | 0.02 (1.3) | 0.02 (0.1) | 0.990 | 0.01 | - |
| 26-week follow-up | 0.02 (0.1) | 0.00 (0.00) | 0.322 | - | |
| # Outpatient Treatment Episodes, mean (SD) | |||||
| 8-week follow-up | 0.7 (0.5) | 1.3 (3.1) | 0.167 | 0.26 | - |
| 26-week follow-up | 0.7 (1.7) | 0.5 (0.5) | 0.402 | −0.16 | |
| # Mutual Self-Help Meetings, mean (SD) | |||||
| 8-week follow-up | 18.7 (23.6) | 25.5 (28.1) | 0.173 | 0.25 | - |
| 26-week follow-up | 21.2 (26.5) | 33.6 (44.9) | 0.088 | 0.34 | |
| Primary and Secondary Outcome Measures | |||||
| Alcohol Consumption (TLFB): past 28 days | |||||
| Participants reporting any drinking | 17 (29.8) | 15 (27.3) | 0.765 | −0.05 | 0.536 |
| 8-week follow-up, # (%) | 20 (38.5) | 20 (37.7) | 0.939 | −0.01 | |
| 26-week follow-up, # (%) | |||||
| Participants reporting any heavy drinking | |||||
| 8-week follow-up, # (%) | 10 (17.5) | 10 (18.2) | 0.930 | 0.02 | 0.585 |
| 26-week follow-up, # (%) | 14 (26.9) | 13 (24.5) | 0.779 | −0.05 | |
| # Drinks per Day | |||||
| 8-week follow-up, mean (SD) | 0.2 (0.5) | 0.2 (0.5) | 0.880 | 0.01 | 0.609 |
| 26-week follow-up, mean (SD) | 0.7 (1.7) | 0.3 (0.7) | 0.199 | −0.31 | |
| % Drinking Days | |||||
| 8-week follow-up, mean (SD) | 6.5 (16.9) | 3.4 (7.7) | 0.220 | −0.23 | 0.084 |
| 26-week follow-up, mean (SD) | 11.5 (22.5) | 5.9 (11.6) | 0.106 | −0.31 | |
| % Heavy Drinking Days | |||||
| 8-week follow-up, mean (SD) | 2.4 (6.5) | 1.5 (4.0) | 0.387 | −0.17 | 0.299 |
| 26-week follow-up, mean (SD) | 4.5 (9.3) | 3.2 (8.7) | 0.486 | −0.14 | |
| Drinking-related consequences (DrInC): past month | |||||
| Total Score | |||||
| 8-week follow-up, mean (SD) | 11.2 (16.3) | 17.8 (19.3) | 0.061 | 0.37 | 0.188 |
| 26-week follow-up, mean (SD) | 11.3 (16.9) | 16.5 (17.6) | 0.139 | 0.30 | |
Abbreviations: DrInC: Drinking-Related Consequences; TLFB: Timeline Followback.
1
p value (Chi square test for categorical, two-sample t-test for continuous variables)
2
p value resulting from a repeated measures analysis (linear mixed effects model) adjusted for baseline values of the measure, gender, age, race, and employment status