N = 325
|
Increased
|
Decreased
|
No change
|
p-value*
|
---|
Heroin
|
115 (35%)
|
122 (38%)
|
88 (27%)
|
0.52
|
Methadone
|
84 (26%)
|
70 (22%)
|
171 (52%)
|
0.72
|
Buprenorphine
|
73 (22%)
|
66 (20%)
|
186 (58%)
|
0.31
|
Other opioids
|
59 (18%)
|
62 (19%)
|
205 (63%)
|
0.51
|
Cocaine
|
83 (26%)
|
96 (30%)
|
146 (44%)
|
0.41
|
Alcohol
|
69 (21%)
|
70 (22%)
|
186 (57%)
|
0.86
|
Benzo/Barbiturate
|
99 (30%)
|
74 (23%)
|
152 (47%)
|
0.004
|
Number of substances** used
|
131 (40%)
|
125 (38%)
|
69 (21%)
|
0.65
|
- *Wilcoxon signed rank test which compares the median difference between two repeated measures among the repeat enrollers.
- **Participants were asked about use of heroin, methadone, buprenorphine, other opioids, cocaine, alcohol, benzodiazepine/barbiturate and methamphetamine.