Table 2.
Distribution of Baseline Individual Characteristics by Psychiatric Trajectory Group
| Low Severity Group (n = 338) | Deteriorating Group (n = 256) | Improving Group (n = 174) | High Severity Group (n = 166) | p | |
|---|---|---|---|---|---|
| Age group (%) | |||||
| 18 to 29 | 21.3 | 25.8 | 23.6 | 25.9 | ns |
| 30 to 39 | 39.9 | 35.2 | 32.8 | 38.0 | |
| 40 to 49 | 25.2 | 30.9 | 31.0 | 28.3 | |
| 50 and older | 13.6 | 8.2 | 12.6 | 7.8 | |
| Female gender (%) | 21.0 | 35.9 | 42.5 | 55.4 | < .0001 |
| Ethnicity (%) | |||||
| White | 67.8 | 77.7 | 81.5 | 81.9 | .0018 |
| Black | 16.6 | 9.8 | 6.4 | 9.6 | |
| Hispanic | 10.1 | 9.8 | 6.9 | 7.2 | |
| Other | 5.6 | 2.7 | 5.2 | 1.2 | |
| Dependence type (%) | |||||
| No dependence | 14.2 | 9.4 | 8.1 | 10.8 | ns |
| Alcohol only | 41.4 | 43.4 | 46.0 | 38.6 | |
| Drug only | 27.2 | 29.7 | 28.7 | 30.7 | |
| Both | 17.2 | 17.6 | 17.2 | 19.9 | |
| Income less than $40,000 (%) | 49.6 | 56.0 | 50.3 | 67.1 | .0018 |
| Education (%) | |||||
| Less than high school | 13.4 | 9.5 | 17.4 | 17.1 | ns |
| High school graduate | 58.6 | 66.9 | 56.4 | 57.9 | |
| College or more | 28.0 | 23.6 | 26.2 | 25.0 | |
| Married (%) | 48.8 | 45.9 | 51.2 | 34.3 | .0073 |
| Employed (%) | 62.2 | 59.2 | 60.5 | 45.1 | .0027 |
| Baseline ASI scores, mean | |||||
| Alcohol | 0.45 | 0.45 | 0.49 | 0.43 | ns |
| Drug | 0.11 | 0.12 | 0.12 | 0.14 | .0420 |
| Employment | 0.36 | 0.39 | 0.35 | 0.45 | .0005 |
| Family/social | 0.35 | 0.39 | 0.43 | 0.46 | .0002 |
| Legal | 0.11 | 0.12 | 0.09 | 0.11 | ns |
| Medical | 0.31 | 0.38 | 0.41 | 0.48 | .0006 |
| Psychiatric | 0.31 | 0.41 | 0.44 | 0.59 | < .0001 |
| Length of stay in weeks, mean | 9.6 | 9.1 | 9.4 | 6.6 | ns |
Note: ASI = Addiction Severity Index; ns = not significant at p < .05 level.