st: Dropped variabled in Simultaneuos Equations

[mmolina@uniroma3.it]

Dear Statalist,
I did
reg3 (normscore l1 b2b age l4a l11a l10) (expshare b2b l1 age normscore
l4a) for three different countries.
In all of them I worked with the same type of database. But only in one
country I obtained dropped values in coefficients, what should I do?
Thanks and regards




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