Table 3.

Association between Time in treatment and Non-disclosure of opioid or cocaine use

Time in Treatment	Did not self-report opioid Use and positive UDT OR (95% CI)	Did not self-report cocaine use and positive UDT OR (95% CI)
Days 1–30	7.53 (1.96, 29.00)	5.39 (1.89, 15.33)
Days 31–90	4.93 (1.28, 18.90)	3.12 (1.15, 8.45)
Days 91–180	3.53 (1.09, 11.47)	2.30 (0.86, 6.20)
Days 181–365	3.10 (0.69, 13.90)	0.88 (0.30, 2.53)
>365 days	1.00 (reference)	1.00 (reference)

^**Adjusted for age at start of treatment, gender, race/ethnicity, HCV exposure, any psychiatric diagnosis