Table 3.
Regression Results for Number of Days of Self-reported Duties at AA, NA, CA or CMA Meetings in the Last 30 Days
| Zero-inflation (Never Performing Duties) | Count or Rate of Duties Performed | |||||
|---|---|---|---|---|---|---|
| OR | 95% CI | p-value | RR | 95% CI | p-value | |
| Baseline (n = 285) | ||||||
| Average Attendance | 0.42 | 0.21, 0.82 | 0.013 | 1.40 | 1.05, 1.87 | 0.023 |
| Perceived Benefit | 0.81 | 0.38, 1.74 | 0.585 | 1.47 | 0.93, 2.33 | 0.099 |
| Perceived Severity | 1.03 | 0.48, 2.19 | 0.948 | 1.11 | 0.67, 1.83 | 0.680 |
| Perceived Barriers | 0.65 | 0.34, 1.23 | 0.187 | 0.79 | 0.58, 1.08 | 0.144 |
| No. of Other Activities | 0.42 | 0.23, 0.76 | 0.004 | 1.15 | 0.82, 1.60 | 0.424 |
|
| ||||||
| End-of-Treatment (n = 241) | ||||||
| Average Attendance | 1.86 | 0.82, 4.22 | 0.141 | 1.28 | 0.98, 1.67 | 0.075 |
| Perceived Benefit | 0.54 | 0.16, 1.81 | 0.317 | 0.81 | 0.57, 1.15 | 0.232 |
| Perceived Severity | 0.60 | 0.24, 1.53 | 0.287 | 1.31 | 0.87, 2.02 | 0.196 |
| Perceived Barriers | 0.26 | 0.46, 1.51 | 0.135 | 0.65 | 0.48, 0.86 | 0.004 |
| No. of Other Activities | 0.22 | 0.06, 0.80 | 0.022 | 1.14 | 0.83, 1.57 | 0.426 |
|
| ||||||
| 3-Month Follow-up (n = 205) | ||||||
| Average Attendance | 0.58 | 0.37, 0.91 | 0.020 | 0.99 | 0.81, 1.21 | 0.919 |
| Perceived Benefit | 1.15 | 0.71, 1.84 | 0.571 | 0.88 | 0.68, 1.15 | 0.352 |
| Perceived Severity | 0.73 | 0.46, 1.16 | 0.188 | 1.25 | 0.92, 1.69 | 0.163 |
| Perceived Barriers | 1.08 | 0.71, 1.65 | 0.717 | 0.85 | 0.66, 1.09 | 0.202 |
| No. of Other Activities | 0.63 | 0.40, 0.97 | 0.037 | 1.27 | 1.00, 1.61 | 0.052 |
|
| ||||||
| 6-Months Follow-up (n =171) | ||||||
| Average Attendance | 1.07 | 0.71, 1.62 | 0.737 | 1.11 | 0.83, 1.48 | 0.493 |
| Perceived Benefit | 0.99 | 0.60, 1.62 | 0.957 | 0.95 | 0.70, 1.29 | 0.747 |
| Perceived Severity | 1.04 | 0.60, 1.81 | 0.878 | 1.39 | 1.00, 1.92 | 0.053 |
| Perceived Barriers | 0.92 | 0.55, 1.53 | 0.737 | 0.77 | 0.57, 1.05 | 0.101 |
| No. of Other Activities | 0.62 | 0.39, 0.99 | 0.047 | 1.09 | 0.81, 1.46 | 0.592 |
Note: A zero-inflated negative binomial model was utilized with the logistic portion (never performing duties) and the negative binomial (or count) portion interpreted separately in terms of odds ratios and incidence rate ratios, respectively. Example: the number of types of other Self-Help Activities is a significant predictor at each time point, indicating that individuals with more types of other Self-Help Activities at baseline were more likely to perform Duties (e.g., had lower odds of “never” performing Duties). For those who did perform Duties (the count part of the model), the Perceived Barriers variable is statistically significant at end-of-treatment (p = .0036). That is, for every standard deviation increase in the score on Perceived Barriers at baseline, the rate of the number of days of Duties decreased by 35% (OR = 0.65).