If you are looking for robust multivariate or multivariable methods, then review the Robust Methods Task View:

https://cran.r-project.org/view=Robust


--

David.

On 3/13/19 4:06 AM, Jackson, Daniel wrote:
Hi Frank and Dennis

I am in a similar situation but I would prefer to use a proportional odds 
model. 2 questions.


   1.  Has rank ancova been implemented in R now, despite its short comings?
   2.  Where has it been shown to yield unreliable analyses? I would like this 
evidence (which I believe but I would like to convince others!).

Thanks, Dan
________________________________

AstraZeneca UK Limited is a company incorporated in Engl...{{dropped:16}}

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