Summary statistics for drg1991 dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
         drg |          0
      drgnum |        490       245.5    141.5951          1        490
   drgweight |        490    1.291964    1.579629          0    15.2645
     drgdesc |          0
      drgsys |          0
-------------+---------------------------------------------------------
     drgvers |        490           8           0          8          8
        trim |        490     313.898    92.91744          0        690
         low |          0
        alos |        490    5.937143    4.267815          0         40
         mdc |        490    9.120408     6.09299          0         25
-------------+---------------------------------------------------------
     medsurg |          0
      fydate |        490       11231           0      11231      11231
       fyear |        490        1991           0       1991       1991
     mdcdesc |          0

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