Hi,
I´ve got this model
> model<-glm(prevalence~agesex+agesex:month,binomial)
and the output of anova is like that
> anova(model,test="Chisq")
Df Deviance Resid. Df Resid. Dev P(>|Chi|)
NULL 524 206.97
agesex 2 9.9165 522 197.05 0.007025 **
agesex:month 9 18.0899 513 178.96 0.034145 *
I don´t know how to interpret the interaction "agesex:month", my mind doubt
between 2 options:
a) For a giving group of "agesex" there are differences between months
b)There are differences between groups of "agesex" in some months but not in
others.
Which option is correct?
Thanks very much
-----
Mario Garrido Escudero
PhD student
Dpto. de Biología Animal, Ecología, Parasitología, Edafología y Qca. Agrícola
Universidad de Salamanca
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