Table 2.

PHQ-9 scores at baseline and at 12 weeks post assessment in the EVIDENT trial: intervention group (n=509) versus care as usual control group (n=504)

	Baseline						Post
	Intervention		Care as usual		Cohen’s d	Cohen’s d	Intervention		Care as usual		Cohen’s d	Cohen’s d
	M	SD	M	SD		95% CI	M	SD	M	SD		95% CI
Sex
Female	10.5	2.3	10.5	2.3	0	−0.17 to 0.17	7.68	4.1	9.37	4.4	0.25	−0.24 to 0.75
Male	9.7	2.5	10.5	2.5	0.14	−0.14 to 0.42	7.24	3.8	8.69	4.1	0.37	−0.07 to 0.80
Age (median split)
<44 years	10.4	2.4	10.4	2.4	0	−0.22 to 0.22	7.97	4.2	9.21	4	0.3	−0.06 to 0.67
≥44 years	10.1	2.4	10.3	2.4	0.09	−0.12 to 0.29	7.14	3.9	9.11	4.6	0.47	−0.11 to 0.83
Education
Higher secondary	10.2	2.4	10.4	2.5	0.05	−0.13 to 0.24	7.58	4.1	9.05	4.2	0.35	−0.05 to 0.66
Other	10.3	2.5	10.3	2.3	0.02	−0.24 to 0.28	7.47	4	9.41	4.5	0.46	0.0 to 0.92
Employment
Full or part time	10.3	2.4	10.3	2.4	0	−0.18 to 0.18	7.49	4.1	9	4.4	0.36	−0.03 to 0.68
Not working	10.1	2.5	10.4	2.4	0.1	−0.15 to 0.36	7.65	3.9	9.44	4.1	0.45	0.03 to 0.87
Relationship status
Married/living with a partner	10.1	2.5	10.3	2.4	0.09	−0.11 to 0.28	7.38	4	8.92	4.2	0.37	−0.05 to 0.70
Not living with a partner (including divorcees and widowers)	10.4	2.3	10.4	2.5	0	−0.37 to 0.38	7.65	4.5	9.87	4.3	0.51	−0.18 to 1.20
Single	10.6	2.4	10.5	2.3	0.04	−0.25 to 0.33	7.89	4	9.32	4.5	0.34	−0.19 to 0.87
Lifetime frequency of episodes
1 episode	9.63	2.6	9.98	2.4	0.14	−0.21 to 0.49	7.00	4.1	8.55	4.4	0.38	−0.23 to 0.97
2–5 episodes	10.3	2.4	10.1	2.5	0.1	−0.13 to 0.33	7.10	4	8.56	3.9	0.37	0.0 to 0.74
6–10 episodes	10.1	2.5	10.7	2.3	0.23	−0.10 to 0.56	7.91	3.8	10	4.9	0.49	0.10 to 1.08
11–20 episodes	10.9	2.1	10.9	2	0.03	−0.43 to 0.37	8.40	3.9	10.2	4.2	0.44	−0.35 to 1.23
>20 episodes	10.7	2.2	11.2	2.1	0.21	−0.22 to 0.66	8.84	4.3	10.5	4.4	0.37	−0.52 to 1.27

CI, confidence interval; M, mean; PHQ-9, Patient Health Questionnaire-9; SD, standard deviation.