* Information at http://www.nber.org/data/aha

* You can test your program on 3,029 records of RANDOM 
* DATA at  /home/data/aha/aha-synth. That file has
* all the variables, but totally random values. 
* That will allow you to check for spelling errors, 
* syntax, etc but give no indication of reality.

* Your extract will be returned to your regular
* account ( the one with no DUA extension) and
* not behind the vpn.

* Specify variable names and years needed.

log using aha-extract.log ,replace text

#delimit ;

use fileyear id 

reg stcd hospn dtbeg dbegm dbegd dbegy 
dtend dendm dendd dendy dcov fyr fisyr fism fisd 
fisy cntrl serv servoth radmchi hsacode 

using /home/data/aha/dta/allyears if fileyear>=2010;

#delimit cr

summarize

saveold aha-extract,replace