Table 3.

Generalized estimating equations predicting substance use days: Parameter estimates

Source	B	SE B	95% Wald Confidence Interval		Odds Ratio	95% Confidence Interval for Odds Ratio		p
			Lower	Upper		Lower	Upper
(Intercept)	−1.18	.20	−1.57	−.79	.31	.21	.46	<.001
Condition: LETS ACT-SE	−.17	.28	−.71	.37	.85	.49	1.45	.55
Condition: LETS ACT	−.09	.28	−.63	.45	.91	.53	1.57	.74
Condition: TAU (Ref.)	0	.	.	.	1	.	.	.
Time: FU12	−.41	.39	−1.18	.36	.66	.31	1.43	.29
Time: FU6	−.70	.33	−1.35	−.04	.50	.26	.96	.04
Time: FU3	−.49	.33	−1.14	.17	.61	.32	1.18	.15
Time: FU1	−1.11	.35	−1.80	−.43	.33	.17	.65	.001
Time: PT	−1.33	.37	−2.05	−.60	.27	.13	.55	<.001
Time: Pretreatment (Ref.)	0	.	.	.	1	.	.	.
Days in IOP	.01	.01	−.02	.03	1.01	.98	1.03	.59
Days in restricted environment	−.01	.002	−.02	−.009	.99	.98	.99	<.001
LETS ACT-SE*FU12	.20	.51	−.81	1.21	1.22	.44	3.34	.70
LETS ACT-SE*FU6	.50	.46	−.40	1.40	1.65	.67	4.05	.28
LETS ACT-SE*FU3	−.12	.48	−1.07	.82	.88	.35	2.26	.80
LETS ACT-SE*FU1	.40	.46	−.51	1.30	1.48	.60	3.66	.39
LETS ACT-SE*PT	−.44	.55	−1.52	.64	.65	.22	1.90	.43
LETS ACT-SE*Pretreatment (Ref.)	0	.	.	.	1	.	.	.
LETS ACT*FU12	.65	.52	−.37	1.66	1.91	.69	5.25	.21
LETS ACT*FU6	.16	.44	−.71	1.02	1.17	.49	2.78	.73
LETS ACT*FU3	−.50	.48	−1.46	.45	.60	.23	1.56	.30
LETS ACT*FU1	.15	.53	−.90	1.19	1.16	.41	3.27	.79
LETS ACT*PT	−1.09	.51	−2.09	−.09	.34	.12	.92	.03
LETS ACT*Pretreatment (Ref.)	0	.	.	.	1	.	.	.

Note. LETS ACT = Life Enhancement Treatment for Substance Use; LETS ACT-SE = Life Enhancement Treatment for Substance Use, Smartphone-Enhanced Condition; TAU = Treatment as Usual; FU12 = 12 month follow-up; FU6 = 6 month follow-up; FU3 = 3 month follow-up; FU1 = 1 month follow-up; PT = Posttreatment; IOP = Intensive Outpatient Treatment; Days in IOP = days in TAU prior to pretreatment assessment.