Study conduct in groups [Design Issues]

posted by felipeberlinski – Brazil, 2015-02-04 23:36 (4157 d 20:22 ago) – Posting: # 14372
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Why?

Once I have questioned the same inclusion of group effect analysis and the biostat said that this effect could appear when you cannot give the treatments to whole sample size at the same time/day. (statement 1)

However group effect is not a big deal such as sequence, treatment or period effect. (statement 2)

Just taking a ride on the initial clarification, could someone explains these "statements" to me?

Tks!

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