Summary statistics for drg1990 dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
         drg |          0
      drgnum |        478    239.5042    138.1382          1        480
   drgweight |        478    1.261225    1.485564          0    15.2645
     drgdesc |          0
      drgsys |          0
-------------+---------------------------------------------------------
     drgvers |        478           7           0          7          7
        trim |        478    308.3891    86.37663          0        660
         low |          0
        alos |        478    5.945607    3.976637          0       37.6
         mdc |        478    8.970711    5.830878          0         23
-------------+---------------------------------------------------------
     medsurg |          0
      fydate |        478       10866           0      10866      10866
       fyear |        478        1990           0       1990       1990
     mdcdesc |          0

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