[R] Don´t know what test i have to use

[David Winsemius]

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
> -- 
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>
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David Winsemius, MD
West Hartford, CT