Collaborative care vs consultation liaison for depression and anxiety disorders in general practice: study protocol for two randomized controlled trials (the Danish Collabri Flex trials)

Table 3 Power calculations for secondary outcomes in the depression trial

	δ value for clinically relevant difference	α value for type I error	σ value for the within-group SD	Calculated power	Reference
BAI	4	0.05 (5%)	10	0.870 (87.0%)	[66, 67] SD is based on data from the Collabri depression trial (not published)
SDS	4	0.05 (5%)	9	0.930 (93.0%)	[51, 52, 71]
SCL-90-R	23	0.05 (5%)	50	0.944 (94.4%)	[72]
WHO-5	10	0.05 (5%)	18	0.990 (99.0%)	[55, 73] SD is based on data from the Collabri depression trial (not published)

BAI Beck Anxiety Inventory, SCL-90-R Symptom Checklist 90-Revised, SD standard deviation, SDS Sheehan Disability Scale, WHO-5 World Health Organization-Five Well-being Index

ISSN: 1745-6215