Table 1.

Participant Disposition

	MO	CM	Total
	N (%)	N (%)	N (%)
All eligibility criteria met and consented			42
Randomized to study conditions	19	21	40 (95%)
Received study treatment	16 (84%)	19 (90%)	35 (83%)
Discontinued after treatment initiation	3 (16%)	2 (10%)	5 (12%)
Assessed at time of surgery (EOT)	16 (84%)	19 (90%)	35 (88%)
Completed 3-month follow-up*	11 (58%)	18 (86%)	29 (69%)

MO (monitoring only) refers to the control condition. CM (contingency management) refers to the treatment condition. EOT refers to end of treatment.

*p < .05.