Table 2.

Power estimations for the secondary continuous outcomes

Outcome	Minimal clinically important difference	Expected standard deviation	Alpha	Sample size	Power	Reference
	δ	σ	α	n	1−β
Functional impairment (WSAS)	4.5	10	5	166	82	Phillips et. al. [19]
Quality of life (SF-36—mental component)	5	11	5	166	83	Rollman et al. [20]
Global functioning (GAF)	4	8.5	5	166	85	Jørgensen et al. [21]

GAF Global Assessment of Functioning, SF-36 Short-Form Health Survey 36, WSAS Work and Social Adjustment Scale