On Sun, 10 Apr 2011, Joe P King wrote:

Is there a way to get confidence intervals around an ordered regression like
polr() in the MASS package?

Please don't both ask the author directly *and* post to a forum.

The answer is the same as the one I sent you directly.

- For what do you want CIs, and why? The fits/predictions are probabilities, and CIs for probabilities are rarely useful.

- You can do this by simulation, and simulate() has a polr method.

-------------------------------------------

Joe King, M.A.

Ph.D. Student

University of Washington - Seattle

206-913-2912

<mailto:j...@joepking.com> j...@joepking.com

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Ad astra per aspera  - "Through hardships to the stars"

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Brian D. Ripley,                  rip...@stats.ox.ac.uk
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