Table 2.

Pooled results of iCBT service– and acceptability-related outcomes: guidance time, age, gender, completed sessions, completed components, and deterioration rates.

Groups		Number of studies	Pooled mean (SD)	95% CI	Range
Guidance timea(min)
	All studies	12	148.50 (146.99)	92.9-204.1	43.0-378.6
	Depression studies	4	82.44 (290.46)	45.29-119.60	43.0-183.0
	Anxiety studies	9	157.60 (108.10)	92.33-222.86	43.0-378.6
Age (years)
	All studies	29	38.3 (3.02)	37.2-39.4	29.8-43.5
	Depression studies	12	39.0 (2.12)	37.8-40.2	29.0-41.7
	Anxiety studies	21	37.8 (3.04)	36.5-39.2	29.8-43.5
Gender, female (n, %)
	All studies	23	65.4 (20.06)	57.2-72.8	22.2-91.7
	Depression studies	11	70.1 (24.37)	55.7-81.4	22.2-91.7
	Anxiety studies	17	64.3 (17.25)	56.1-71.6	22.2-86.0
Average percentage of sessions completed
	All studies	14	60.6 (6.49)	57.2-72.8	16.7-90.0
	Depression studies	5	62.6 (1.60)	61.2-63.9	16.7-90.0
	Anxiety studies	10	57.3 (1.94)	56.1-58.4	16.7-74.3
Average percentage of participant completing all treatment components
	All studies	26	61.0 (14.83)	55.3-66.9	27.3-82.6
	Depression studies	12	62.8 (13.61)	55.1-70.0	44.0-82.6
	Anxiety studies	18	61.7 (17.75)	53.5-69.3	27.3-82.0
Deterioration (% deterioration in sample)
	All studies	14	2.9 (1.91)	1.9-4.3	1.0-16.6
	Depression studies	5	2.5 (0.34)	2.2-2.9	1.0-12.5
	Anxiety studies	9	3.1 (2.30)	1.6-5.9	1.0-16.6

^aExcluded study Ruwaard et al [50] as outlier.