Hello all,
I am running a lmer model with two random effect levels, household nested in village, with two categorical predictors and a binomial outcome. I would like to obtain risk ratios and so am using the term family=binomial(link=log). However, using this link doesn’t allow the model to converge properly and I get the following message:
Error in
mer_finalize(ans) :
mu[i]
must be in the range (0,1): mu = 18.3133, i = 166
As I understand it from posts elsewhere, this is due to the fact that one or more observations producing a linear predictor that, when mapped to a predicted probability, falls outside the admissible range of [0,1]. Does anyone know of a way to overcome this?Thank you!Hugh
Hugh Sturrock
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