Table 3. Results of outcome measures for the Comorbid Sample (cut-offs on both PHQ-9 and GAD-7): Observed and Estimated Means, standard deviations, confidence intervals and effect sizes (Cohen’s d) for each group.

	n	Observed Means			Estimated Means			Effect sizes (based on estimated means)
		Pre	Post	Follow-up	Pre	Post	Follow-up	Within Group Pre-post	Post Between Group TEG vs. TG	Within Group Pre-follow	Follow-up Between Group TEG vs. TG
PHQ-9
TEG	47	14.64 (3.34)	7.58 (4.60)	6.34 (4.58)	14.63 (4.61)	7.69 (4.95)	6.47 (4.99)	1.45 (.99–1.89)	.56 (.14–.96)	1.70 (1.21–2.16)	.51 (.09–.92)
TG	46	14.39 (3.33)	10.57 (6.16)	8.94 (6.27)	14.39 (4.61)	10.48 (5.10)	9.09 (5.28)	.80 (.37–1.22)		1.07 (.62–1.50)
GAD-7
TEG	47	14.30 (3.01)	6.70 (4.39)	6.39 (4.30)	14.29 (4.21)	7.02 (4.71)	6.34 (4.58)	2.02 (1.51–2.50)	.65 (.22–1.06)	2.05 (1.54–2.54)	.45 (.04–.86)
TG	46	14.33 (3.36)	10.16 (6.07)	8.50 (4.62)	14.32 (4.27)	10.01 (4.53)	8.46 (4.83)	.96 (.52–1.38)		1.29 (.83–1.72)

Note. Standard deviations and confidence intervals are shown in parentheses. TEG: Treatment Plus Automated Email Group. TG: Treatment Group; Pre: Pre-treatment, Post: Post-treatment; Follow-up: 3-month follow-up; PHQ-9: Patient Health Questionnaire 9-Item; GAD-7: Generalised Anxiety Disorder 7-Item.