Table 3.

Estimated main and interaction effects

Outcomea	Beta estimates	CI	Main effect (time)			Interaction effect (group * time)
			F	df	p	F	df	p
Gambling days last 30 days	15.02	12.64–17.39	202.81	712	<0.001	2.15	712	0.117
Gambling time last 7 days	401.34	250.98–551.70	93.47	712	<0.001	2.20	712	0.111
Money spent last 30 days	3,792.02	2,252.37–5,331.67	52.31	712	<0.001	0.62	712	0.539
PGSI	12.22	11.15–13.29	728.73	712	<0.001	3.54	712	0.030
G-SAS	18.31	15.28–21.33	229.61	712	<0.001	8.83	712	<0.001
Cigarettes smoked last 7 days	30.96	−0.08–62.01	10.73	712	<0.001	26.68	712	<0.001
Drinking days last 7 days	2.67	−0.62–5.96	0.78	712	0.460	3.92	712	0.060
PHQ-9	8.72	8.12–9.32	229.47	356	<0.001	19.41	356	<0.001
GAD-7	2.71	1.29–4.12	227.79	356	<0.001	41.09	356	<0.001

^aLinear mixed model with a random effect for individual subjects, group as a fixed factor, follow-up scores as outcomes, and baseline variables that predicted missing data as covariates. GAD-7, General Anxiety Disorder; G-SAS, Gambling Symptom Assessment Scale; PGSI, Problem Gambling Severity Index; PHQ-9, Patient Health Questionnaire.