Table 1.
Characteristics of Participants at Baseline and at end of Stabilization Phase.
| Characteristics | Baseline N=894 | End of Stabilization Phase N=516 |
|---|---|---|
|
| ||
| Mean Age (SD) | 36.47 (10.46) | 35.89 (10.45) |
|
| ||
| Mean Number of years of education (SD) | 13 (2.08) | 13 (2.15) |
|
| ||
| Mean Number of days employed (in past 30 days) (SD) | 5 (3.13) | 4 (3.09) |
|
| ||
| Mean COWS (SD) | 8.40 (3.91) | 8.49 (3.96) |
|
| ||
| Mean ARSW (SD) | 61.74 (32.49) | 62.17 (32.15) |
|
| ||
| Mean VAS (SD) | 69.23 (24.08) | 69.63 (24.31) |
|
| ||
| % Gender (n) | ||
| Male | 67 (599) | 67.05 (346) |
| Female | 33 (295) | 32.95 (170) |
|
| ||
| % Race (n) | ||
| Caucasians | 73.88 (659) | 76.16 (393) |
| African-American | 13.68 (122) | 11.63 (60) |
| Hispanics | 9.64 (86) | 9.30 (48) |
| Others | 2.80 (25) | 2.91 (15) |
|
| ||
| % Marital Status (n) | ||
| Married/Remarried | 22.28 (199) | 24.22 (125) |
| Widowed/Separated/Divorced | 26.32 (235) | 24.22 (125) |
| Never Married | 51.40 (459) | 51.55 (266) |
|
| ||
| % Route of Administration (n) | ||
| Inject | 58.41 (521) | 54.26 (280) |
| Non-inject | 41.59 (371) | 45.74 (236) |
|
| ||
| % Arrested for Criminal Activity (lifetime) (n)* | ||
| Yes | 67 (599) | 61.24 (316) |
| No | 33 (295) | 38.76 (200) |
|
| ||
| % On Probation or Parole (n) | ||
| Yes | 10.53 (94) | 10.08 (52) |
| No | 89.47 (799) | 89.92 (464) |
|
| ||
| % Depressed (in past 30 days) (n) | ||
| Yes | 29.90 (267) | 28.88 (149) |
| No | 70.10 (626) | 71.12 (367) |
|
| ||
| % Previous treatment for drug abuse(lifetime) (n) | ||
| Yes | 73.57 (657) | 71.32 (368) |
| No | 26.43 (236) | 28.68 (148) |
|
| ||
| % Opiate use (In past 30 days) (n) | ||
| Less than 30 days | 24.83 (222) | 27.52 (142) |
| 30 days | 75.17 (672) | 72.48 (374) |
|
| ||
| % Cannabis use (In past 30 days) (n) | ||
| No use | 58.84 (526) | 58.14 (300) |
| Use 1+ days | 41.16 (368) | 41.86 (216) |
|
| ||
| % Methamphetamine use (In past 30 days) (n) | ||
| No use | 89.49 (800) | 89.53 (462) |
| Use 1+ days | 10.51 (94) | 10.47 (54) |
|
| ||
| % Nicotine usage (In past 30 days) (n) | ||
| No use | 14.99 (134) | 14.53 (75) |
| Use 1+ days | 85.01 (760) | 85.47 (441) |
|
| ||
| % UA positive for opioids | ||
| positive | 97.55 (795) | 62.98 (325) |
| negative | 2.45 (20) | 37.02 (191) |
|
| ||
| % UA positive for other drugs | ||
| positive | 98.02 (803) | 66.47 (341) |
| negative | 1.47 (12) | 33.53 (172) |
|
| ||
| % Daily Buprenorphine Dose (n) | ||
| 8 mg | -- | 9.30 (48) |
| 16 mg | -- | 27.33 (141) |
| 24 mg | -- | 63.37 (327) |
*
Significant difference between baseline and randomization time point (p<0.05)