Hi,

I am running in Stata 15 the logistic model with wave fixed effect. As I was previously recommended Statalist I can use both -meqrlogit- and -melogit- and if one one fails to converge, the other often will.

I have run both models and received in both models for some log likelihood the message that it is not concave:

Code:
melogit charity_participation i.generation sex i.income_class i.educ_level happiness char_conf i.marital_status i.religion i.country(S002) || wave(S003):
Array

Code:
meqrlogit charity_participation i.generation sex i.income_class i.educ_level happiness char_conf i.marital_status i.religion i.country(S002) || wave(S003):
Array
Array


Can you advise please if it is a problem and which model is better to use?

BR,
Anna