Table 1.
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)