Table 4.
Domain comparisons and descriptive statistics for those who engaged and did not engage in treatment in the Randomized Sample (N = 175).
| Domain | Variable | Not engaged (N = 65) |
Engageda (N = 110) |
Comparison | p | ||
|---|---|---|---|---|---|---|---|
| Test | df | Test value | |||||
| Demographics | Age | 42.49 ± 7.25 | 42.78 ± 7.04 | t | 173 | −0.26 | 0.795 |
| Caucasian | 14 (21.5%) | 25 (22.7%) | χ2 | 1 | 0.03 | 0.855 | |
| Male | 38 (58.5%) | 73 (66.4%) | χ2 | 1 | 1.10 | 0.294 | |
| Education (high school graduate) | 38 (60.3%) | 74 (67.3%) | χ2 | 1 | 0.85 | 0.357 | |
| Veteran | 27 (41.5%) | 45 (40.9%) | χ2 | 1 | 0.01 | 0.935 | |
| Psychiatric/clinical | Psychiatric diagnosis (SSDb vs other) | 25 (38.5%) | 42 (38.2%) | χ2 | 1 | 0.00 | 0.971 |
| Psychiatric hospitalization, past 90 days | 25 (39.1%) | 26 (23.9%) | χ2 | 1 | 4.49 | 0.034 | |
| PANSSc Positive subscale | 1.84 ± 0.59 | 1.83 ± 0.7 | t | 173 | 0.05 | 0.962 | |
| PANSS negative subscale | 1.78 ± 0.67 | 1.78 ± 0.57 | t | 173 | 0.04 | 0.972 | |
| PANSS general subscale | 1.87 ± 0.36 | 1.84 ± 0.4 | t | 173 | 0.40 | 0.689 | |
| PANSS depression subscale | 2.87 ± 0.9 | 2.73 ± 0.91 | t | 173 | 0.95 | 0.343 | |
| Substance | Drug dependence statusd | 54 (83.1%) | 60 (54.5%) | χ2 | 1 | 14.65 | <0.001 |
| Abuse/clinical | Current alcohol dependence | 21 (32.3%) | 24 (22.0%) | χ2 | 1 | 2.25 | 0.134 |
| Heroin use, years | 0.8 ± 3.42 | 0.84 ± 3.6 | t | 172 | −0.08 | 0.937 | |
| Cocaine use, years | 9.41 ± 8.43 | 10.75 ± 8.08 | t | 172 | −1.04 | 0.298 | |
| Marijuana use, years | 9.42 ± 10.42 | 10.68 ± 10.39 | t | 173 | −0.78 | 0.437 | |
| Days of drug use, last monthe | 9.57 ± 12.5 | 5.61 ± 9.63 | t | 109 | 2.35 | 0.030 | |
| Days of drug problems, last month | 10.34 ± 11.47 | 8.75 ± 11.25 | t | 173 | 0.90 | 0.370 | |
| Days of drug treatment, last month | 11.52 ± 10.25 | 16.17 ± 11.66 | t | 171 | −2.65 | 0.009 | |
| Legal trouble | Number of arrests/charges, lifetime | 6.51 ± 8.56 | 4.68 ± 7.89 | t | 173 | 1.43 | 0.154 |
| Arrested in last 90 days | 14 (21.9%) | 10 (9.2%) | χ2 | 1 | 5.44 | 0.020 | |
| Family/Social | Independent living situation (yes/no) | 26 (47.3%) | 36 (35.0%) | χ2 | 1 | 2.28 | 0.131 |
| Subjective family BQOLf subscale | −0.5 ± 1.75 | 0.3 ± 1.72 | t | 168 | −2.92 | 0.004 | |
| Objective family BQOL subscale | 3.25 ± 1.1 | 3.3 ± 1.1 | t | 168 | −0.27 | 0.787 | |
| Subjective social BQOL subscale | −0.27 ± 1.4 | 0.17 ± 1.22 | t | 168 | −2.15 | 0.033 | |
| Objective social BQOL subscale | 0.14 ± 1 | −0.09 ± 1.03 | t | 168 | 1.46 | 0.147 | |
| Days of family conflict, last month | 3.71 ± 7.88 | 2.88 ± 7.6 | t | 173 | 0.69 | 0.494 | |
| Days of conflict w/others, last month | 2.83 ± 6.8 | 2.65 ± 6.62 | t | 173 | 0.18 | 0.860 | |
| Motivation to Change | Readiness to change | 10.39 ± 1.59 | 10.5 ± 1.65 | t | 170 | −0.41 | 0.683 |
| Temptation to use drugs | 3.1 ± 0.94 | 2.68 ± 0.95 | t | 172 | 2.83 | 0.005 | |
a
Engaged defined as attending 3 or more treatment sessions.
b
Schizophrenia spectrum disorder.
c
Positive and negative syndrome scale.
d
Current versus recent drug dependence.
e
Days of drug use = number of days of cocaine use + number of days of heroin use + number of days of marijuana use in the past 30 days.
f
Brief quality of life interview.