Table 4.
Differences in Substance Use and Social Network Variables Pre- and Post-Incarceration (Aim 2)
| Variable | By Condition – M (SD) |
|||||
|---|---|---|---|---|---|---|
| MI (n = 14) | EI (n = 11) | |||||
|
|
||||||
| Pre | Post | Pre | Post | β | g | |
| Any Substance Use Treatment Seeking – n (%) | 4 (28.6%) | 5 (35.7%) | 5 (45.5%) | 3 (27.3%) | 0.193 | 0.506 |
| Substance Use Treatment Days | 0.8 (1.6) | 3.3 (8.0) | 1.3 (1.8) | 1.2 (3.0) | 0.201 | 0.397 |
| Percentage of Days with Alcohol Use Only | 16.4 (25.2) | 14.3 (33.6) | 35.4 (42.9) | 22.6 (35.1) | 0.097 | −0.302 |
| Percentage of Days with Drug Use Only | 49.1 (40.3) | 17.2 (31.7)* | 15.2 (28.4) | 3.9 (8.1) | 0.083 | 0.816 |
| Percentage of Days with Alcohol and Drug Use | 11.9 (19.1) | 1.2 (4.5) | 16.8 (32.9) | 8.5 (27.4) | −0.093 | 0.126 |
| Percentage of Days Completely Abstinent | 22.6 (22.5) | 67.3 (41.4)** | 32.7 (35.3) | 65.0 (40.0) | 0.087 | 0.294 |
| Percentage of Networks – Heavy Drinkers | 18.2 (23.8) | 9.2 (19.3) | 18.8 (16.6) | 7.3 (11.3)* | 0.067 | −0.148 |
| Percentage of Networks – Heavy Drug Users | 29.3 (27.5) | 7.1 (10.8)* | 19.1 (18.3) | 15.6 (19.3) | −0.311 | 1.198 |
| Percentage of Networks – Users of Any Kind | 78.3 (18.2) | 45.8 (28.1)** | 66.3 (23.6) | 56.7 (23.7) | −0.265 | 0.843 |
Notes.
*
p < 0.05;
**
p < 0.01;
***p < 0.001.
Pre-incarceration substance use treatment days were divided by three to account for longer baseline time period. Paired sample t tests examined pre- and post-incarceration within group-differences and were done with arcsin transformed data; Ms and SDs for the substance use variables show raw data. Regression models included study condition as a predictor and controlled for baseline values. Negative gs indicate results that favored the EI group.