Message-ID: <85D525CB-A96D-4638-9E90-95E8306EADD1@comcast.net>
Date: 2011-01-12T18:37:39Z
From: David Winsemius
Subject: Don´t know what test i have to use
In-Reply-To: <1294854710709-3214491.post@n4.nabble.com>
On Jan 12, 2011, at 12:51 PM, gaiarrido wrote:
>
> Hello,
> I?m starting with my PhD and I have to stop because i got a little
> knowledge
> in R and statistics.
> I?ve got a model of this kind:
> binary response variable: prevalence of infection (0/1)
> 3 categorical independent variables: sex, month and name of the area
>
> I was trying with a full model like this, before the simplification
>
> model<-aov(prevalencia~sex*month*area)
>
> but the Fligner test told that i haven?t got homoscedascity, so I
> suppose I
> should trying with glm, with a model
>
> model2<-glm(prevalencia~edad*sexo*mes*zona,binomial)
>
> is that correct? where I must put the link (logit) ?
Why not read the help page regarding binomial that is on the help page
for glm. There you will learn what the default link is for binomial.
--
David
>
> Thnks very much
> --
> View this message in context: http://r.789695.n4.nabble.com/Don-t-know-what-test-i-have-to-use-tp3214491p3214491.html
> Sent from the R help mailing list archive at Nabble.com.
>
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> and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
West Hartford, CT