. Author manuscript; available in PMC: 2008 May 2.

Published in final edited form as: J Subst Abuse Treat. 2007 Feb 22;32(4):321–329. doi: 10.1016/j.jsat.2006.05.021

Table 3.

Logistic regression results predicting the adoption of voucher-based incentives as a function of organizational characteristics and CTN exposure (N=888)

Variable	b	Odds ratio
Predominantly public revenues	.527	1.693^a
For-profit structure	−.537	.585^b
Accredited by JCAHO or CARF	−.436	.646^b
Surveys buyers and suppliers	−.194
Outpatient-only services	−.437	.646^b
FTEs (log)	.141
Physician(s) on staff or contract	−.242
Percent master's-level counselors	−.182
Percent primary opiate clients	.000
Period of survey	.045
Program experience in clinical research	.030
Program not a CTN member (reference category)	---
Program in CTN but not in MIEDAR protocol	.042
Program participated in CTN MIEDAR protocol	.914
Constant	−.651

Note: Pseudo R2 (.052) calculated as (mpdel chi sqare / original -2LL) (Hosmer & Lemeshow, 1989).

MIEDAR = Motivational Incentives for Enhanced Drug Abuse Recovery.

p<.01

p<.05