Table 1.

Summary statistics of nine studies comparing guided computerised cognitive behavioural therapy for major depression with wait list controls

	n	ES superiority (Intervention)	Adherent (intervention) (%)	Follow-up length (weeks)
Andersson et al19	117	0.98	65	26
Berger et al20	51	1.10	56	26
Kessler et al21	297	0.81	52	16
Meyer et al22	396	0.65	50	26
Perini et al23	48	0.65	74	–
Ruwaard et al24	54	0.70	92	78
Titov et al25	104	1.31	89	16
Vernmark et al26	58	0.96	93	26
Warmerden et al27	175	0.54	69	4
Mean ES		0.86

ES, effect size.