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nickki_s
nickki_s
Level I

LSMeans Tests between Student's t vs. Tukey HSD

Dec 6, 2018 03:42 PM (9655 views)

Has anyone seen this result where Student's t letters are the same while Tukey HSD letters are different. I usually see visa versa. Any thought?

 

 

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Mark_Bailey
Staff Mark_Bailey
Staff
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Re: LSMeans Tests between Student's t vs. Tukey HSD

Dec 6, 2018 03:57 PM (9650 views)  |  Posted in reply to message from nickki_s 12-06-2018

I would not perform any post hoc tests until I validated the assumptions of the model and addressed all the issues with the estimation.

  • Did you notice the warnings in the report of the variance components?
  • Did you notice that your model is over-specified and the fixed and random effects are confounded?
  • Did you notice that one of the random effects is zeroed?
  • How do you justify treating gender as a random effect?

 

I don't think that this analysis is quite ready for any post hoc tests.

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Mark_Bailey
Staff Mark_Bailey
Staff
Solution

Re: LSMeans Tests between Student's t vs. Tukey HSD

Dec 6, 2018 03:57 PM (9651 views)  |  Posted in reply to message from nickki_s 12-06-2018

I would not perform any post hoc tests until I validated the assumptions of the model and addressed all the issues with the estimation.

  • Did you notice the warnings in the report of the variance components?
  • Did you notice that your model is over-specified and the fixed and random effects are confounded?
  • Did you notice that one of the random effects is zeroed?
  • How do you justify treating gender as a random effect?

 

I don't think that this analysis is quite ready for any post hoc tests.

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