sdm-help-list > Group Comparison for unbalanced group sizes
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May 10, 2016  09:05 AM | Nobody
Group Comparison for unbalanced group sizes
Dear SDM Team,

I want do compare two groups of studies (implicit vs explicit instruction) by means of the "Compare two groups" option in the Linear Model section. However, the number of studies in one group is considerably higher in one group compared to the other (i.e., more studies coded "1" than "0")
Is this a problem?

Kind regards,
Lisa
Jun 22, 2016  03:06 PM | Joaquim Radua
RE: Group Comparison for unbalanced group sizes
Dear Lisa,

this is not a problem, as far as the number of studies in each group is large enough.

With the best wishes,

Joaquim
Oct 19, 2016  12:10 PM | lisa kronbichler - Christian Doppler Klinik, Paracelsus Medical University Salzburg
RE: Group Comparison for unbalanced group sizes
Dear Joaquim,

Thank you for your helpful answer! 
Unfortunately the number of studies is unsatisfactory. I did the comparison as a sort of exploratory analysis.

Best,
Lisa