[R] MuMIn - assessing variable importance following model averaging, z-stats/p-values or CI?

[Kamil Bartoń]

p-value > 0.05 means that the 95% confidence intervals span zero.
Use "confint" to get the CI. It is described in "?model.avg".

cheers,
kamil


Dnia 2012-06-27 12:00, Robertson, Andrew pisze:
> Dear R users,
>
> Recent changes to the MuMIn package now means that the model averaging command (model.avg) no longer returns confidence intervals, but instead returns zvalues and corresponding pvalues for fixed effects included in models.
>
> Previously I have used this package for model selection/averaging following Greuber et al (2011) where it suggests that one should use confidence intervals from model averaging to assess whether your fixed effects have an affect or not  (If confidence intervals do not span zero then variable has an affect).
>
> Can anyone tell me why MuMIn now gives z-stats and p-values and whether these should be used to assess the 'significance'/importance of variables when model averaging?

<...>