Dear UseRs,

I am using a database containing nearly 200 000 observations occurring in 33
groups.
With a model of the form ( y ~ x + (1|group) ) in lmer, my number of degree
of freedom is really large.
I am wondering if this large df have an impact on the p values, mainly if
this could conduct to consider the effect of a variable as significant while
it is not .
... and if it is the case, does it exist a correction to apply on the
results to take into account that bias.

thanks !

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