Concerta Guidance: Sub x Form interaction variance test [Regulatives / Guidelines]

posted by AngusMcLean – USA, 2014-12-06 02:28 (3400 d 15:45 ago) – Posting: # 13993
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I am thinking "no". It is from a (sum of squares) so by definition it cannot be negative.

If you are getting a negative value then I would check the formula you are using to do the calculation and the calculations.

Also I would look at your input to make sure your PK parameters are correctly entered. If you are using hypothetical parameters then I would examine them with a view to altering them to make them more realistic.

Are you using hypothetical parameters?

Angus
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