[R] Function recommendation for this study...
Paul Heinrich Dietrich
paul.heinrich.dietrich at gmail.com
Mon May 11 12:35:59 CEST 2009
Thank you for the suggestions, I'm sure irr is what I'm looking for. Thanks
> To look up "observer agreement", you might consider the
> "RSiteSearch" package. The "RSiteSearch.function" looks only for
> matches in help pages of contributed packages.
> oa <- RSiteSearch.function("observer agreement")
> attr(oa, "hits") # 4 functions matching this term
> HTML(oa) # to open the results as a table in a web browser.
> An alternative search term for this is "interrater reliability".
> ir.r <- RSiteSearch.function("inter-rater reliability")
> attr(ir.r, "hits") # 1
> irr <- RSiteSearch.function("interrater reliability")
> attr(irr, "hits") # 19
> ir..r <- RSiteSearch.function("inter rater reliability")
> attr(ir..r, "hits") # 1
> In particular, this identified a package "irr" for interrater
> The development version of the "RSiteSearch" package on R-Forge
> includes a "unionRSiteSearch" function that allows one to combine all
> these searches. You can get this version using
> repos="http://R-Forge.R-project.org")'; if this gives you version
> 1.0-0, please wait 24 hours and try again, because this version contains
> a bug that I just fixed. The new version 1.0-1 should be available in
> 24 hours. With it, the following just worked for me:
> IRR <- unionRSiteSearch(oa, unionRSiteSearch(ir.r,
> unionRSiteSearch(irr, ir..r) ) )
> attr(IRR, "hits")
> Hope this helps.
> Spencer Graves
> Murray Cooper wrote:
>> I suggest looking up "observer agreement". The description of your
>> study sounds like a classical
>> categorical observer agreement problem. I can't give
>> a reference off the top of my head, but if you get
>> stuck, e-mail me and I'll try and find a ref to get you started.
>> Murray M Cooper, Ph.D.
>> Richland Statistics
>> 9800 N 24th St
>> Richland, MI, USA 49083
>> Mail: richstat at earthlink.net
>> ----- Original Message ----- From: "Paul Heinrich Dietrich"
>> <paul.heinrich.dietrich at gmail.com>
>> To: <r-help at r-project.org>
>> Sent: Sunday, May 10, 2009 8:25 AM
>> Subject: [R] Function recommendation for this study...
>>> I'm not used to thinking along these lines, and wanted to ask your
>>> Suppose you have a sample of around 100, consisting of patients
>>> according to
>>> doctors, in which patients and doctors are given a questionnaire with
>>> categorical responses. Each patient somehow has roughly 3 doctors, or 3
>>> rows of data. The goal is to assess by category of each question or
>>> DV the
>>> agreement between the patient and 3 doctors. For example, a question
>>> may be
>>> asked about how well the treatment is understood by the patient, and the
>>> patient answers with their perception, while the 3 doctors each
>>> answer with
>>> their perception.
>>> The person currently working on this has used a Wilcoxon Sign Rank
>>> test, and
>>> asked what I thought. Personally, I shy away from nonparametrics and
>>> parametric Bayesian methods, but of course am up for whatever is most
>>> appropriate. I was concerned about using multiple Wilcoxon tests,
>>> one for
>>> each question, and wondering if there is a parametric method in R for
>>> something like this, and a method which is multivariate? Thanks for any
>>> View this message in context:
>>> Sent from the R help mailing list archive at Nabble.com.
>>> R-help at r-project.org mailing list
>>> PLEASE do read the posting guide
>>> and provide commented, minimal, self-contained, reproducible code.
>> R-help at r-project.org mailing list
>> PLEASE do read the posting guide
>> and provide commented, minimal, self-contained, reproducible code.
> R-help at r-project.org mailing list
> PLEASE do read the posting guide
> and provide commented, minimal, self-contained, reproducible code.
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