Table 1.
Summary of participant socio-demographic and drug-use characteristics by CM treatment response group.
| Variable | Responders (n = 15) N (%) or M (SD) | Non-Responders (n = 43) N (%) or M (SD) | Group Difference |
|---|---|---|---|
| Socio-Demographic Characteristics | |||
| Sex | χ2 < 0.00, p > 0.999 | ||
| Female | 3 (20%) | 7 (16.3%) | |
| Male | 12 (80%) | 36 (83.7%) | |
| Race | χ2 = 3.16, p = 0.367 | ||
| African American | 13 (86.7%) | 28 (65.1%) | |
| Asian | 0 (0.0%) | 1 (2.3%) | |
| White | 2 (13.3%) | 9 (20.9%) | |
| Unknown/Other | 0 (0.0%) | 5 (11.6%) | |
| Ethnicity | χ2 = 0.08, p = 0.775 | ||
| Hispanic | 1 (6.7%) | 6 (14.0%) | |
| Non-Hispanic | 14 (93.3%) | 37 (86.0%) | |
| # Days Abstinent in Study | 10.13 (1.8) | 1.3 (1.8) | Z = 5.8, p < 0.001 |
| Age | 48.47 (9.2) | 51 (7.6) | Z = −0.9, p = 0.404 |
| Education | 12.93 (1.8) | 12.55 (1.4) | Z = 1.1, p = 0.304 |
| Demand Curve Parameters | |||
| Q0 | 13.62 (16) | 47.19 (152.8) | Z = −1.9, p = 0.065 |
| α | 0.003 (0.01) | 0.0017 (0.01) | Z = −0.3, p = 0.804 |
| Cocaine Use Characteristics | |||
| SCID - Number of Symptoms | 7.4 (2.2) | 6.86 (2) | Z = 0.8, p = 0.376 |
| SCID Rating | χ2 < 0.00, p > 0.999 | ||
| Moderate | 4 (26.7%) | 12 (27.9%) | |
| Severe | 11 (73.3%) | 31 (72.1%) | |
| ASI - Years Used (Lifetime) | 11.07 (6.6) | 17.16 (9.1) | Z = −2.3, p = 0.020 |
| AS I - Days Used (Past 30) | 14.27 (9.5) | 17.28 (9.6) | Z = −1.2, p = 0.243 |
| KMSK | |||
| Lifetime Score | 13.13 (2.2) | 14.55 (1.8) | Z = −2.4, p = 0.016 |
| Last 30 Day Score | 9.13 (1.9) | 9.48 (2.1) | Z = −0.9, p = 0.384 |
| Most Spent Lifetime | 101.6 (58.7) | 236.05 (278.6) | Z = −2.3, p = 0.020 |
| Average Spent Last 30 Days | 59.67 (48.8) | 76.84 (65.3) | Z = −0.8, p = 0.424 |
| Cocaine Route of Administration | χ2 = 0.14, p = 0.708 | ||
| Nasal | 3 (20%) | 5 (11.6%) | |
| Smoking | 12 (80%) | 38 (88.4%) | |
| Day 1 Status | χ2 = 12.7, p < 0.001 | ||
| Negative | 8 (53.3%) | 3 (7.0%) | |
| Positive | 7 (46.7%) | 40 (93.0%) | |
| Other Drug Use | |||
| # Cigarettes/Day | 9.88 (8.7) | 12.26 (9.6) | Z = −0.7, p = 0.471 |
| # Drinks/Week | 2.53 (2.4) | 1.81 (2.1) | Z = 1.0, p = 0.325 |
| Cigarette Smoker | χ2 = 0.01, p = 0.933 | ||
| No | 3 (20%) | 11 (25.6%) | |
| Yes | 12 (80%) | 32 (74.4%) | |
| Alcohol Drinker | χ2 = 0.54, p = 0.462 | ||
| No | 4 (26.7%) | 18 (41.9%) | |
| Yes | 11 (73.3%) | 25 (58.1%) | |