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# st: Forvalue and bysort

 From Christian OTCHIA To statalist@hsphsun2.harvard.edu Subject st: Forvalue and bysort Date Mon, 6 Dec 2010 09:14:34 -0800 (PST)

```Dear Statalisters,

I'd like to calculate a scalar "Welfare" for rural and urban using a nested
loop. Let's urb has value 1 for "urban" and 2 for "rural". I tried to use
this code but it seems that scalar may not be combined with by.
Can someone help me?

Regards,

Christian

******************
forvalues i = 1/9 {
forvalues j = 1/9 {
bysort urb : scalar welfare = w`i'bar*(lnp`i'bar*1.1) +
0.5*w`i'bar*_b[e`i'`j'c]*(lnp`i'bar*1.1)*(lnp`j'bar*1.1)
}
}
*
di welfare
*****************

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```