Hi,
Suppose a binomial GLM with both continuous as well as categorical
predictors (sometimes referred to as GLM-ANCOVA, if I remember
correctly). For the categorical predictors = indicator variables, is
then there a suggested minimum frequency of each level ? Would such a
rule/ recommendation be dependent on the y-side too ?
Example: N is quite large, a bit > 100. Observed however are only 0/1s
(so Bernoulli random variables, not Binomial, because the covariates are
from observations and in general always different between observations).
There are two categorical predictors, each with 2 levels. It would
structurally probably also make sense to allow an interaction between
those, yielding de facto a single categorical predictor with 4 levels.
Is then there a minimum of observations falling in each of the 4 level
category (either absolute or relative), or also that plus also
considering the y-side ?
thanks !
Thomas
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