No way! But... [Design Issues]

posted by Helmut Homepage – Vienna, Austria, 2019-12-06 15:47 (1629 d 01:59 ago) – Posting: # 20942
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Ahoy my capt’n and welcome back to this side of the pond!

❝ I do not know why there is a regulatory tradition for only using completers …


Those days when studies were evaluated by a paired t-test with a pocket calculator?

❝ – I would say there is even a potential scientific and ethical advantage of using all period data.


Correct. If we would be allowed (pun!) to use a mixed-effects model. Patterson and Jones argued against this doubtful practice and the ethical implications of discarding data.*



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