Hi everyone,

I'm running a logit which returns the following message:
note: 65.city != 0 predicts success perfectly

65.city dropped and 4 obs not used

I can't understand what these messages mean, specially the one where observations are lost. Can anyone shed some light? I get that observations in city 65 always seem to have the same 0/1 category, but I can't understand why these are not used.

best wishes,

Li