Table 2.

Retained in treatment along the 12 weeks of intervention

Treatment	STA (%)	STCM (%)	OR*	P-value
Retention	(n=32)	(n=33)	(95%CI)
Less then 1 week	56.2	15.2	0.14 (0.04 – 0.45)	0.0007
≥4 weeks	34.4	66.7	3.8 (1.4 – 10.7)	0.013
≥8 weeks	25	62.5	4.6 (1.6 – 13.3)	0.005
12 weeks	0	51.5	68.9 (3.8 – 1219.4)	0.0001

^*the reference group is the Standard Treatment Alone condition.

Abbreviations: STCM, Standard Treatment plus Contingency Management; STA, Standard Treatment Alone; OR, Odds Ratio; CI, Confidence Interval