. Author manuscript; available in PMC: 2024 Oct 17.

Published in final edited form as: BMJ Public Health. 2024 Jul 8;2(1):e000725. doi: 10.1136/bmjph-2023-000725

Table 2.

Opioid Risk Behavior^* Among Study Participants over Time, by Trial Arm

Risk behavior	Proportion endorsing risk behavior (95% CI)		Risk ratio (95% CI)	Time × intervention P value
Risk behavior	Intervention arm (n=519)	Usual care arm (n=485)	Risk ratio (95% CI)	Time × intervention P value
Opioid risk behavior				0.93
Time 0	59.9 (55.7, 64.1)	52.0 (47.5, 56.4)	1.15 (1.03, 1.29)
4 months	44.4 (40.0, 48.8)	39.0 (34.6, 43.5)	1.14 (0.98, 1.32)
8 months	43.4 (38.9, 47.8)	38.8 (34.3, 43.3)	1.12 (0.96, 1.30)

Opioid risk behavior was analyzed as a binary outcome, with a positive response defined as endorsing one or more risk behaviors on the ORBIT (Opioid-Related Behaviors in Treatment) scale