I am running several melogit commands whereby I am accounting for clustering of individuals (it is a repeated measures design). So, I have melogit commands that look like this (increasing complexity).
melogit suicide score if flw_up == 1|| ppt_id:, or
melogit suicide score age i.sex_ i.employment i.ethnicity if flw_ == 1 || ppt_id:, or
I have a total of 800 participants who have flw_up==1, but the number of groups in the output varies. For the first line of code the output indicates a total of 800 groups and for the second one 799. I thought that melogit uses all available information and does not carry out listwise deletion as with other models, is this not the case? Am I missing something?