
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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