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. Author manuscript; available in PMC: 2020 Feb 1.

Published in final edited form as: Addict Behav. 2018 Oct 1;89:143–150. doi: 10.1016/j.addbeh.2018.09.036

Table 2.

Logistic Regression Models of Social Interactions on Substance Use and Treatment Initiation among Probationers.

	Substance Use^a				Treatment Initiation^b
	2-month^c		6-month^d		2-month^e		6-month^f
	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI

Model 1
SS Quantity	1.12	(0.88, 1.43)	1.19	(0.89, 1.58)	0.97	(0.70, 1.36)	1.17	(0.88, 1.57)
SS Quality	0.36^*	(0.20, 0.65)	0.50^*	(0.25, 0.99)	0.82	(0.38, 1.75)	0.49^*	(0.25, 0.96)
Model 2
SS Quantity	1.15	(0.89, 1.50)	1.32	(0.97, 1.79)	0.95	(0.66, 1.36)	1.11	(0.81, 1.52)
Positive Support	0.60^*	(0.39, 0.90)	0.49^**	(0.29, 0.81)	1.01	(0.58, 1.78)	0.93	(0.57, 1.52)
Negative Support	1.66^*	(1.05, 2.64)	1.03	(0.60, 1.77)	1.22	(0.66, 2.28)	1.86^*	(1.08, 3.20)
Model 3
SS Quantity	1.15	(0.90, 1.48)	1.25	(0.93, 1.67)	0.97	(0.69, 1.35)	1.08	(0.84, 1.38)
SS Quality	0.43^**	(0.24, 0.80)	0.66	(0.32, 1.35)	0.76	(0.34, 1.71)	0.52	(0.26, 1.06)
Relationship Conflict	1.24^*	(1.01, 1.52)	1.40^**	(1.07, 1.84)	0.93	(0.69, 1.24)	1.19	(0.88, 159)

Note: OR = Odds Ratio; 95% CI = 95% Confidence Interval.

^*

p < .05,

^**

p < .01,

^***

p < .001.

^a

Models controlled for participant age, gender, race, and criminal risk level.

^b

Models controlled for participant age, gender, race, criminal risk level and whether the probationer was mandated to attend s ubstance use treatment.

^c

N = 295.

^d

N = 285.

^e

N = 277.

^f

N = 268.