Dear Statalisters,
I'm learning how to make some programs in Stata, but I�m having
problems in using the 'while' command.
My database looks like this:
FIRM_ID IND1 IND2 IND3 .....IND9 TAX INV
120 1 0 0 0 0.16 100
123 0 1 0 0 0.16 200
120 1 0 0 0 0.15 150
134 0 0 0 1 0.16 180
123 0 1 0 0 0.15 200
134 0 0 0 1 0.15 120
.
.
123 0 1 0 0 0.17 130
I need to do a two step regression by the variable IND, this is: when
IND1==1, IND2==1, IND3==1, ...,IND9==1, I need that Stata runs this
programm:
First step:
regress TAX EXP, robust
predict tax_hat
Second step:
xtreg INV tax_hat, fe
end
So, what I was trying to do in my do-file was (and it's not working):
local industria "ind1 ind2 ind3 ind4 ind5 ind6 ind7 ind8 ind9"
while `industria' == 1 {
reg tax exp, robust
predict double tax_hat
xtreg ln_inv tax_hat, fe vce(bootstrap)
drop tax_hat
}
But when I do this, Stata gives me this message: program error:
code follows on the same line as open brace
I don�t understand what�s the problem so I'd appreciate your help very much.
Thanks,
Leonor
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