. Author manuscript; available in PMC: 2015 Feb 1.

Published in final edited form as: J Subst Abuse Treat. 2013 Aug 15;46(2):10.1016/j.jsat.2013.07.006. doi: 10.1016/j.jsat.2013.07.006

Table 5.

Predictors of group membership (abstainer trajectory is comparison group)

Variable	Low-rate stable	Rapidly declining	Gradually declining	High-rate stable

	Beta	Beta	Beta	Beta
Gender¹	−.60	.24	.08	.06
Age	−.02	−.07^**	−.07^**	−.09^***
Addiction severity	−.06	.09	.06	.08
Risk score	−.37^*	−.01	.16	.16
Hard drug user²	1.46^*	2.50^***	2.92^***	3.07^***
Study condition³	−.09	−.55	−.34	−.40

p < .05,

^**

p < .01,

^***

p < .001

Females are the comparison category

Individuals who reported no hard drug use in the past 30 days are the comparison category

The standard referral (control) group is the comparison category