Summary statistics for icd9sg2010 dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     prcdrcd |          0
   shortdesc |          0
     version |      3,838          27           0         27         27
       fyear |      3,838        2010           0       2010       2010

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