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

Table 2

Interim urine samples in relation to 9-month retention in OMT.

	Total	Retention > 9 months	Retention < 9 months
Number of patients	36	30	6
Percent positive urine samples in IT, median (IQR)
Opiates	0 (0–23)	0 (0–17)	13 (0–57)	0.393
Benzodiazepines	33 (0–59)	27 (0–56)	60 (19–93)	0.087
Cannabis	6 (0–69)	18 (0–70)	0 (0–37)	0.297
Amphetamine	0 (0–6)	0 (0–9)	0 (0–4)	0.577
Cocaine	0 (0-0)	0 (0-0)	—	0.239