[R] bootstrap pValue in DClusters (fwd)

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[R] bootstrap pValue in DClusters (fwd)

Roger Bivand
I'm forwarding this to the R-sig-geo list to see if some other user of the
off-CRAN Dcluster package who may be able to help - it is also possible to
write to the package maintainer directly.

Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Breiviksveien 40, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 93 93
e-mail: Roger.Bivand at nhh.no

---------- Forwarded message ----------
Date: Thu, 18 Dec 2003 14:38:41 +0100
From: SAULEAU Erik-Andr? <SAULEAUEA at ch-mulhouse.fr>
To: "'r-help at stat.math.ethz.ch'" <r-help at stat.math.ethz.ch>
Subject: [R] bootstrap pValue in DClusters

Hello R-List

I use DClusters package (I work in a cancer regestry). I have 2 questions
about it:

1-how is it possible to get back the bootstrap pValue? I mean the pValue of
the calculated statistic with respect of the distribution of this statistic
under the null hypothesis.

2-how is it possible to test an overdispersion in the poisson model? for
choosing a best model I need this mesure of dispersion. Should I build a
glm(cases~expected,family=quasipoisson)$sig2 or is it possible directly in

Thank you, for advance for answers. Best regards, Erik A.

Erik-Andr? SAULEAU

H?pital du Hasenrain
BP 1070
87, Avenue de Altkirch
68051 MULHOUSE C?dex

Tel: 03-89-64-79-95
Fax: 03-89-64-79-71
M?l: sauleauea at ch-mulhouse.fr
Web: http://www.ch-mulhouse.fr



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Roger Bivand
Department of Economics
Norwegian School of Economics
Helleveien 30
N-5045 Bergen, Norway