Summary statistics for drg1987 dataset :

by Jean Roth , jroth@nber.org , 22 Apr 2016

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
         drg |          0
      drgnum |        477         239    137.8423          1        477
   drgweight |        477    1.164344    1.063705          0    12.3234
     drgdesc |          0
      drgsys |          0
-------------+---------------------------------------------------------
     drgvers |        477           4           0          4          4
        trim |        477    203.0398    75.37988          0        400
        alos |        477    6.351572    3.967587          0       23.1
         mdc |        475    9.058947    5.780505          0         23
     medsurg |          0
-------------+---------------------------------------------------------
      fydate |        477        9770           0       9770       9770
       fyear |        477        1987           0       1987       1987
     mdcdesc |          0

by Jean Roth , jroth@nber.org , 22 Apr 2016