Table 2.
Drinking-related Outcomes and Treatment Satisfaction
| Variables | Monitoring Only (n=15) |
Monitoring Plus CM (n=14) |
Statistic (df) |
p- value |
Effect sizea |
|---|---|---|---|---|---|
| Drinking-related Outcomes | |||||
| % negative breath samples (mean, SD) |
66.9 (19.1) | 87.1 (11.4) | F (1, 28) = 12.4 | .00 | .62 |
| Longest duration of negative samples (days) |
5.9 (3.4) | 16.8 (10.1) | F (1, 27) = 9.59 | .00 | .52 |
| Self-reported days of drinking, pre- to during treatment (mean, SD) |
24.2 (5.2) to 21.8 (4.5) | 23.4 (4.6) to 10.8 (6.5) | F (1, 27) = 10.02b | .00 | .54 |
| Self-reported drinks per drinking day, pre- to during treatment (mean, SD) |
4.4 (3.2) to 3.7 (2.2) | 4.2 (1.9) to 2.9 (2.2) | F (1, 27) = 0.92b | .35 | .06 |
| ASI Alcohol, Intake to treatment end |
0.32 (0.09) to 0.29 (0.10) | 0.38 (0.11) to 0.20 (.09) | F (1, 27) = 9.33b | .01 | .52 |
| DrInC Overall, Intake to treatment end |
65.0 (10.7) to 63.3 (8.3) | 73.1 (9.0) to 62.5 (6.2) | F (1, 28) = 11.76b | .00 | .60 |
| Treatment Satisfaction | |||||
| Overall Satisfaction (%, n) | χ2 (1) = 0.99 | .81 | .18 | ||
| Very dissatisfied | 13.3% (2) | 7.1% (1) | |||
| Moderately dissatisfied | 6.7% (1) | 7.1% (1) | |||
| Moderately satisfied | 40.0% (6) | 28.6% (4) | |||
| Very satisfied | 40.0% (6) | 57.4% (8) | |||
| Willingness to send videos without compensation (%, n) |
χ2 (1) = 1.13 | .89 | .20 | ||
| Not at all | 13.3% (2) | 14.3% (2) | |||
| Very unwilling | 13.3% (2) | 21.4% (3) | |||
| Somewhat willing | 46.7% (7) | 28.6% (4) | |||
| Moderately willing | 20.0% (3) | 28.6% (4) | |||
| Very willing | 6.7% (1) | 7.1% (1) | |||
| Monitoring affected drinking (%, n) |
χ2 (1) = 19.56 | <.01 | .82 | ||
| Not at all | 40.0% (6) | 0.0% (0) | |||
| Very little | 40.0% (6) | 7.1% (1) | |||
| Somewhat | 20.0% (3) | 21.4% (3) | |||
| Quite a bit | 0.0 (0) | 35.7% (5) | |||
| A lot | 0.0% (0) | 35.7% (5) | |||
| Best duration of monitoring to reduce drinking (%, n) |
χ2 (1) = 3.81 | .28 |
.37 |
||
| 2 months | 53.3% (8) | 21.4% (3) | |||
| 3 months | 20.0% (3) | 42.9% (6) | |||
| 4–6 months | 13.3% (2) | 21.4% (3) | |||
| More than a year | 6.7% (1) | 14.3 (2) | |||
| Ever falsify (% yes) | 0.0% (0) | 0.0% (0) | . | . |
Note. ASI: Addiction Severity Index; DrInC: Drinker Inventory of Consequences; Asterisk indicates p < .01.
a
Cohen’s d for ANOVA analyses; Cramer’s V for χ2 analyses.
b
Statistical tests respresent condition by time interaction effects.