p values from GLM

On Apr 1, 2016, at 5:01 PM, Duncan Murdoch <murdoch.duncan at gmail.com> wrote:

On 01/04/2016 6:46 PM, Bert Gunter wrote:
... of course, whether one **should** get them is questionable...
They're just statistics.  How could it hurt to look at them?
Like Rolf, I thought that this utterance on April 1 deserved fortune enshrinement. It reminded me of one of my favorite articles: "P-Values are Random Variables". 

Unfortunately a legal copy of that paper is still behind a corporate firewall for which you would need to fork over USD 50.00, but a google search for "P-Values are Random Variables The American Statistician" should yield options for the less squeamish. (My copy was obtained when I did have legal access.)
David.
> 
> Duncan Murdoch
> 
>> 
>> http://www.nature.com/news/statisticians-issue-warning-over-misuse-of-p-values-1.19503#/ref-link-1
>> 
>> 
>> Cheers,
>> Bert
>> 
>> 
>> 
>> Bert Gunter
>> 
>> "The trouble with having an open mind is that people keep coming along
>> and sticking things into it."
>> -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
>> 
>> 
>> On Fri, Apr 1, 2016 at 3:26 PM, Duncan Murdoch <murdoch.duncan at gmail.com> wrote:
>>> On 01/04/2016 6:14 PM, John Sorkin wrote:
>>>> How can I get the p values from a glm ? I want to get the p values so I
>>>> can add them to a custom report
>>>> 
>>>> 
>>>>   fitwean<-
>>>> glm(data[,"JWean"]~data[,"Group"],data=data,family=binomial(link ="logit"))
>>>>   summary(fitwean)             # This lists the coefficeints, SEs, z and p
>>>> values, but I can't isolate the pvalues.
>>>>   names(summary(fitwean))  # I see the coefficients, but not the p values
>>>>   names(fitmens)                  # p values are not found here.
>>> 
>>> Doesn't summary(fitwean) give a matrix? Then it's
>>> colnames(summary(fitwean)$coefficients) you want, not names(fitwean).
>>> 
>>> Duncan Murdoch
>>> 
>>> P.S. If you had given a reproducible example, I'd try it myself.
>>> 
>>> 
>>> 
>>>> 
>>>> Thank you!
>>>> John
>>>> 
>>>> John David Sorkin M.D., Ph.D.
>>>> Professor of Medicine
>>>> Chief, Biostatistics and Informatics
>>>> University of Maryland School of Medicine Division of Gerontology and
>>>> Geriatric Medicine
>>>> Baltimore VA Medical Center
>>>> 10 North Greene Street
>>>> GRECC (BT/18/GR)
>>>> Baltimore, MD 21201-1524
>>>> (Phone) 410-605-7119
>>>> (Fax) 410-605-7913 (Please call phone number above prior to faxing)
>>>> 
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>>>> 
>>> 
>>> ______________________________________________
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>>> and provide commented, minimal, self-contained, reproducible code.
> 
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

David Winsemius
Alameda, CA, USA

p values from GLM

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