TABLE 1—
Comparison of Client Demographics for Addiction Treatment Programs Enrolled (10 Programs) and Not Enrolled (31 Programs) in the Sample: New York State, 2008–2009
| Enrolled in Study (n = 2065), Mean (SD) or % | Not Enrolled in Study (n = 7536), Mean (SD) or % | t, χ2df | Effect Size | |
| Age | 36.8 (11.6) | 37.4 (12.2) | −2.349599 | 0.058 |
| Previous treatment episode | ||||
| 0 | 18.8 | 31.4 | ||
| 1 | 20.4 | 23.2 | ||
| 2 | 17.2 | 16.6 | ||
| 3 | 12.5 | 10.9 | ||
| 4 | 9.0 | 5.9 | ||
| ≥ 5 | 21.7 | 12.0 | 2325 | 0.154 |
| Education | ||||
| < high school | 34.9 | 35.4 | ||
| High school or GED | 40.7 | 35.3 | ||
| > high school | 24.4 | 29.3 | 27.22 | 0.053 |
| Employment | ||||
| Employed | 15.7 | 32.0 | ||
| Not in labor force | 68.5 | 51.0 | ||
| Unemployed | 15.8 | 17.0 | 2432 | 0.157 |
| Race/ethnicity | ||||
| African American | 28.0 | 28.8 | ||
| Hispanic | 16.7 | 24.9 | ||
| White | 53.7 | 43.3 | ||
| Other | 1.6 | 3.0 | 96.73 | 0.100 |
| Gender | ||||
| Male | 61.5 | 70.2 | ||
| Female | 38.5 | 29.8 | 56.31 | 0.076 |
| Primary substance | ||||
| Alcohol | 35.8 | 42.7 | ||
| Crack/cocaine | 21.9 | 14.3 | ||
| Marijuana/hash | 12.1 | 15.9 | ||
| Opiate | 28.4 | 24.2 | ||
| Other | 1.7 | 2.9 | 1124 | 0.108 |
| Smoked tobacco past week | ||||
| Yes | 70.5 | 69.3 | ||
| No | 29.5 | 30.7 | 1.201 | 0.011 |
Notes. GED = general equivalency diploma. All comparisons are statistically significant because of the large sample size. Based on Cohen's w,31 0.10 is a small effect and 0.30 is a medium effect.