Hi SPMers,
if I want to run a random effect analysis and compare two different
experimental groups, does statistical power suffer if groups differ with
respect to
1. subject size (e.g. one group contains 12 the control group just 10
subjects) and/or
2. between-subject variance?
So generally speaking, is it appropriate if my control group contains less
subjects than my treatment group?
Thank you in advance.
With best regards,
Nici
Motor Control Laboratory
Dep. of Kinesiology
K.U.Leuven
Tervuurse Vest 101
3001 Heverlee
Belgium
Tel: 32 16 32 90 72
Fax: 32 16 32 91 97
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