Correlates of Nine-Month Retention following Interim Buprenorphine-Naloxone Treatment in Opioid Dependence: A Pilot Study

Table 3

Urine samples in full-scale OMT in relation to 9-month retention.

	Total	Retention > 9 months	Retention < 9 months
Number of patients	36	30	6
Percent positive urine samples, median (IQR)
Opiates	1 (0–4)	1 (0–4)	2 (0–10)	0.930
Benzodiazepines	6 (2–20)	4 (2–16)	23 (13–43)	0.006
Cannabis	4 (0–20)	4 (0–16)	11 (0–28)	0.965
Amphetamine	1 (0–5)	1 (0–5)	1 (0–13)	0.894
Cocaine	0 (0-1)	0 (0-0)	1 (0–4)	0.105