Table 3.

Main effects of treatment on changes in depression and disability.

Fixed effects	PHQ-9a			SDSb
	B	SEc	P value	B	SE	P value
(Intercept, week 4)	8.21	(0.46)	.00	11.33	(0.64)	.000
Baseline PHQ-9 or SDS	2.89	(0.22)	.00	3.91	(0.26)	.000
Medication use	1.10	(0.43)	.01	0.66	(0.53)	.21
Change per week, weeks 1-4	–0.73	(0.14)	.00	–0.67	(0.22)	.002
EVOd condition	–0.52	(0.67)	.44	0.05	(0.94)	.96
iPSTe condition	–0.60	(0.62)	.34	0.47	(0.89)	.60
Change per week, weeks 4-12	–0.01	(0.06)	.90	–0.04	(0.10)	.69
EVO × change per week, weeks 1-4	–0.12	(0.21)	.58	–0.22	(0.33)	.50
iPST × change per week, weeks 1-4	–0.16	(0.19)	.40	–0.02	(0.31)	.94
EVO × change per week, weeks 4-12	–0.03	(0.10)	.77	0.03	(0.16)	.87
iPST × change per week, weeks 4-12	–0.06	(0.09)	.49	–0.05	(0.15)	.76

^aPHQ-9: 9-item Patient Health Questionnaire.

^bSDS: Sheehan Disability Scale.

^cSE: standard error.

^dEVO: Project: EVO.

^eiPST: problem-solving therapy app.