[R] Pairwise comparison of proportions

Dimitris Rizopoulos dimitris.rizopoulos at med.kuleuven.be
Fri Mar 10 09:57:54 CET 2006

look at ?mcnemar.test(); I hope it helps.


Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/(0)16/336899
Fax: +32/(0)16/337015
Web: http://www.med.kuleuven.be/biostat/

----- Original Message ----- 
From: "S.C. Wong" <hhecwsc at hkucc.hku.hk>
To: <r-help at stat.math.ethz.ch>
Sent: Friday, March 10, 2006 9:42 AM
Subject: Re: [R] Pairwise comparison of proportions

>I have collected the following data before and after a treatment for 
> number of sites:
> Before Treatment After Treatment
> Case success failure success failure
> 1 nbs1 nbf1 nas1 naf1
> 2 nbs2 nbf2 nas2 naf2
> 3 nbs3 nbf3 nas3 naf3
> .....
> N nbsN nbfN nasN nafN
> I would like to do a "pairwise" comparison of the two proportions of
> success before and after the treatment to test whether the treatment 
> is
> effective.
> I am wondering if there is any R package that can help conduct this 
> analysis.
> May I thank you in advance for your kind help and advice!
> SC
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