Table 2.

Mixed Models and Postestimation Contrasts and Margins for Insomnia Outcomes

	coefficient/contrast/margin	SE	p-value	95% Confidence Interval
ISI Severity
Interactions
CT vs. BT	−0.39	1.04	0.71	−2.43, 1.65
CBT vs. CT	2.08	1.00	0.04	0.13, 4.04
CBT vs. BT	1.69	1.00	0.09	−0.27, 3.65
Postestimation Contrasts
CT	−8.84	0.73	<0.001	−10.28, −7.41
BT	−9.23	0.74	<0.001	−10.28, −7.41
CBT	−10.92	0.68	<0.001	−12.25, −9.60
ISI Response
Interactions
CT vs. BT	−0.15	0.41	0.72	−0.94, 0.65
CBT vs. CT	−0.58	0.43	0.18	−1.42, 0.27
CBT vs. BT	−0.73	0.44	0.10	−1.58, 0.13
Margins
CT	0.62	0.06	<0.001	0.50, 0.75
BT	0.59	0.07	<0.001	0.46, 0.72
CBT	0.74	0.06	<0.001	0.62, 0.86
ISI Remission
Interactions
CT vs. BT	0.10	0.40	0.80	−0.69, 0.89
CBT vs. CT	−1.09	0.41	0.01	−1.90, −0.29
CBT vs. BT	−0.99	0.42	0.02	−1.80, −0.18
Margins
CT	0.39	0.06	<0.001	0.26, 0.51
BT	0.41	0.07	<0.001	0.28, 0.54
CBT	0.65	0.07	<0.001	0.52, 0.78

Note. Significant p-values are bolded. SE = standard error. ISI = Insomnia Severity Index. CT = cognitive therapy. BT = behavior therapy. CBT = cognitive behavior therapy. “Coefficient” header applies to “Interactions,” “contrasts” header applies to “Postestimation Contrasts,” and margin header applies to “Margins.” For interactions, the first treatment listed represents the reference group (e.g., for “CT vs. BT,” the reference group is CT).