Table 2.

Opioid positive and negative results based on Timeline Follow-Back and urine drug screens (N=15)^a.

Opioid status at baseline	Baseline (n=15)	Week 4 (n=11)	Week 8 (n=10)	Week 12 (n=10)	Week 24 (n=7)
Participants testing positive at baseline (positive for opioids), n/N (%)	7/7 (100)	1/4 (25)	1/4 (25)	3/4 (75)	1/1 (100)
Participants testing negative at baseline (positive for opioids), n/N (%)	0/8 (0)	0/7 (0)	0/6 (0)	1/6 (17)	0/6 (0)

^aPatients were scored as negative if both self-report for the past 30 days by Timeline Follow-Back was negative for opioids and urine toxicology was negative for opioids and scored as positive otherwise.