A community-based peer-support group intervention “Paths to EvERyday life” (PEER) added to service as usual for adults with vulnerability to mental health difficulties – a study protocol for a randomized controlled trial

Table 2 Power calculations for secondary outcomes

Outcome	δ-value for the clinically relevant difference in means	σ-value for expected SD	α	Power	Test	Reference
Empowerment Scale, Rogers (ESR)	0.2	0.35	0.05	0.998	t test	[26, 35]
Manchester Short Assessment of Quality of life (MANSA)	6	1	0.05	1.0	t test	[28, 36]
The Work and Social adjustment scale (WSAS)	4	10	0.05	0.920	t test	[27, 37]

ISSN: 1745-6215