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Table 2 Power calculations for secondary outcomes, calculated from a sample size of 324 participants

From: The effect of IPS-modified, an early intervention for people with mood and anxiety disorders: study protocol for a randomised clinical superiority trial

Measure Mean difference Standard deviation of the pooled mean Type I error Reference Power
No of days of competitive employment of education at 12 months 60 days 150 days 5% Kin W 2008 [21], Burns 2007 [14] 95%
GAF-F 5 15 5% Hoffmann 2011 [19], Howard 2010 [58] 85%
WHO-5 10 19 5% Latimer 2006 [22], Burns 2009 [14] 99%
HAM-D6 2 4 5% Wang 2007 [10], Lexis 2011 [9], Brouwers 2006 [1], Van Oostrom 2010 [59] 99%
HAM-A6 2 4 5% Wang 2007 [10], Lexis 2011 [9], Brouwers 2006 [1], Van Oostrom 2010 [59] 99%
  1. GAF, Global Assessment of Functioning; HAM-A6, Hamilton Anxiety Scale; HAM-D6, Hamilton Depression Scale; WHO-5, WHO-Five Well-being Index.