Table 2 Unadjusted and Adjusted Linear Regression Models Predicting Change in ASSIST scores from baseline to 3 month follow-up (n = 182)
Unadjusted Analysis | Adjusted Analysis | |||||
|---|---|---|---|---|---|---|
Variables | B | 95 % CI a | p-value | B | 95 % CI | p-value |
Age | 0.03 | -0.08-0.14 | 0.56 | 0.02 | -0.09-0.13 | 0.77 |
Gender (Male) | ||||||
Female | 0.98 | -1.13-3.08 | 0.36 | 1.54 | -0.51-3.60 | 0.14 |
Race (black) | ||||||
Coloured | -0.42 | -2.49-1.64 | 0.69 | 0.15 | -1.96-2.27 | 0.89 |
Marital Status (single) | ||||||
Married | 1.48 | -1.38-4.35 | 0.31 | |||
Education (not complete school) | ||||||
Completed high school | 0.28 | -1.77-2.33 | 0.79 | |||
Employment | ||||||
Unemployed | -1.49 | -3.53-0.56 | 0.15 | |||
Problem Alcohol use (no) | ||||||
Yes | 1.73 | -1.24-4.90 | 0.25 | 4.40 | 0.90-7.90 | 0.01 |
Problem Cannabis use (no) | ||||||
Yes | -0.001 | -3.08-3.08 | 0.99 | 1.11 | -1.85-4.06 | 0.46 |
Problem Methamphetamine (no) | ||||||
Yes | 1.34 | -1.93-4.60 | 0.42 | 3.26 | -0.89-7.42 | 0.12 |
Poly-substance use (no) | ||||||
Yes | 0.55 | -2.5- 3.57 | 0.72 | |||
Injury related to substance use (no) | ||||||
Yes | -0.14 | -2.20-1.93 | 0.90 | |||
Depression score (CES-D) | 0.08 | -0.02-0.18 | 0.13 | |||
Readiness to change: Ambivalence (low) | ||||||
High | 2.18 | -0.22-4.57 | 0.07 | |||
Readiness to change: Recognition (low) | ||||||
High | 4.55 | 1.87-7.22 | 0.001 | 11.60 | 6.19-16.19 | <0.001 |
Readiness to change Taking Steps (low) | ||||||
High | 2.38 | -0.68-5.44 | 0.13 | -9.51 | -15.52--3.50 | 0.002 |
Intervention Condition | ||||||
MI vs. Others | -0.97 | -3.07-1.13 | 0.36 | 1.82 | -0.41-4.05 | 0.11 |
PST vs. Others | 4.28 | 2.01-6.54 | <0.001 | 5.61 | 3.07-8.15 | <0.001 |