Geometric means and adjusted means (LSMs) [General Sta­tis­tics]

posted by Helmut Homepage – Vienna, Austria, 2018-07-19 13:01  – Posting: # 19083
Views: 2,660

Hi Elena,

extending what Ohlbe wrote…

» The ratio in your table is not a geometric mean ratio and is therefore rightly not labelled GMR. It is a ratio of LSMEAN, not of geometric means. It makes no difference if your study is balanced (i.e. same number of subjects with sequence TR and sequence RT, in which case the LSMEAN is equal to the geometric mean), but if you have a drop-out and your study gets unbalanced you will get some differences.

See this post for an example of unbalanced sequences and especially the PS.

Cheers,
Helmut Schütz
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