Dear all,
My question could appear stupid but I do not succeed in finding any clear answer to this question neither on the mark book nor on the forum.
My question is quiet simple : Can I use environmental data (so shared by all individuals of a site) as an individual covariate?
My case :
On the one hand, we released 100 individually marked carabids on 5 sites and have done a survival analysis (CJS). Results give us a difference in survival among site (our prediction). For these analyses sites were treated as categorical variable.
On a second hand, some indices of fragmentation (numerical) were computed and we want to test if there is a correlation between these sites-level indices and survival. Is it possible to treat these indices as individual covariates? Is the pseudoreplication induce by this method make the slope estimation wrong?
Thank for help
Stephane