Summary statistics for icd9sg2015 dataset :

by Jean Roth , jroth@nber.org , 27 Apr 2017

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     prcdrcd |          0
    longdesc |          0
   shortdesc |          0
     version |      3,882          32           0         32         32
       fyear |      3,882        2015           0       2015       2015

by Jean Roth , jroth@nber.org , 27 Apr 2017