"ranking" William designs [Design Issues]

posted by vezz – Erba (CO), Italy, 2025-02-20 15:23 (118 d 10:21 ago) – Posting: # 24368
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Hi all,

in my opinion any potential carry-over effect must be avoided by planning a sufficiently long washout between treatment periods. No statistical method can adequately adjust for a carry-over effect unless very strong assumptions about its impact are made.

If appropriate measures are taken to prevent carry-over effects, I see no reason to favor a Williams design over any other Latin square design.

Kind regards,

Stefano

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