Table 5.
Group Differences on Measures of Substance Use and Abuse
| Control (n = 70) M (SD) | Primary (n = 31) M (SD) | Secondary (n = 39) M (SD) | Effect Sizes for Group Differences |
|||
|---|---|---|---|---|---|---|
| Primary vs Control | Secondary vs Control | Secondary vs Primary | ||||
| Survey of Alcohol and Drug Use | ||||||
| Total | -.26 (0.4) | .03 (0.6) | .36 (0.6) | .57* | 1.22*** | .55* |
| Nicotine | -.24 (0.8) | -.13 (0.8) | .49 (1.3) | .68** | .57* | |
| Alcohol | -.28 (1.1) | -.27 (0.7) | .42 (1.1) | .64** | .75* | |
| Marijuana | -.35 (1.0) | -.26 (0.7) | .55 (1.0) | .90*** | .94** | |
| Psychedelics | -.25 (0.3) | .04 (0.9) | .39 (1.7) | .52* | ||
| Amphetamines | -.17 (0.9) | .13 (1.1) | .33 (1.3) | |||
| Cocaine/Crack | -.19 (1.0) | -.14 (0.6) | .39 (1.3) | .50* | ||
| Barbiturates | -.27 (0.4) | .31 (1.3) | .21 (1.3) | .60* | .50* | |
| Tranquilizers | -.25 (0.6) | .24 (1.3) | .24 (1.2) | |||
| Opiates | -.24 (0.6) | .38 (1.3) | .23 (1.2) | .61* | ||
| Short Michigan Alcohol Screening Test | 2.2 (2.3) | 2.8 (2.6) | 3.8 (3.2) | .57** | ||
| Alcohol Dependence Scale | 4.0 (5.5) | 5.3 (6.7) | 12.8 (11.5) | .98*** | .80*** | |
| Drinking Motives Questionnaire | ||||||
| Social | 9.1 (3.7) | 10.8 (4.0) | 11.8 (4.4) | .66** | ||
| Coping | 7.7 (4.2) | 8.3 (4.6) | 11.3 (5.2) | .76*** | .61* | |
| Enhancement | 7.6 (3.7) | 9.6 (5.1) | 12.2 (4.8) | 1.07*** | .53* | |
| Short Drug Abuse Screening Test | 4.9 (5.3) | 8.3 (6.4) | 10.3 (5.3) | .58* | 1.02*** | |
Note.
*
p < .05;
**
p < .01;
***
p < .001.
Values for the Survey of Alcohol and Drug Use scales are z-scores based on the larger female prisoner sample (N =226) from which participants for the current investigation were drawn. For effect sizes of group differences, comparisons are based on post host tests using Tukey’s procedure. Only comparisons with protected p values < .05 are reported.