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Re: st: tukey/dunnett procedures
From
Steven Samuels <[email protected]>
To
[email protected]
Subject
Re: st: tukey/dunnett procedures
Date
Tue, 14 Jun 2011 21:57:30 -0400
Rich-
In Theresa Boswell's dunnett.ado (-findit-), there is a section:
/* Call oneway and save mse and df */
qui oneway `resp' `fact' if `touse',missing
local mse = r(rss)/r(df_r)
local df = r(df_r)
If you can substitute the proper values of the MSE and degrees of freedom from your nested ANOVA command and meet the other requirements of -dunnett- (e.g. equal numbers per group), I think that will do it. Perhaps you can supply the same numbers to -princomp- or -smileplot-.
Steve
Steven J. Samuels
Consultant in Statistics
18 Cantine's Island
Saugerties, NY 12477 USA
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[email protected]
On Jun 14, 2011, at 10:49 AM, Richard Goldstein wrote:
hi,
On Jun 14, 2011, at 2:47 PM, Roger Newson wrote:
I think you'll find that the Dunnett multiple-test procedure is really the Sidak multiple-test procedure. This is available using the -smileplot- package, downloadable from SSC. And the corresponding frequentist q-values are available from the -qqvalue- package, also downloadable from SSC.
I hope this helps.
Best wishes
Roger
Roger B Newson BSc MSc DPhil
Lecturer in Medical Statistics
Respiratory Epidemiology and Public Health Group
National Heart and Lung Institute
Imperial College London
Royal Brompton Campus
Room 33, Emmanuel Kaye Building
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London SW3 6LR
UNITED KINGDOM
Tel: +44 (0)20 7352 8121 ext 3381
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Opinions expressed are those of the author, not of the institution.
On 14/06/2011 15:49, Richard Goldstein wrote:
> hi,
>
> I am looking for any programs, or advice, on doing post-hoc Tukey and
> Dunnett procedures in Stata following a nested ANOVA command
>
> I am familiar with Gleason's -prcomp- command but it cannot handle nesting
>
> thanks,
>
> Rich
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