Summary statistics for drg1985 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    1.125388    .8770065          0     6.7918
      drgsys |          0
     drgvers |        477           2           0          2          2
-------------+---------------------------------------------------------
        trim |        477    246.2893    100.9173          0        460
        alos |        477    7.290776    4.516771          0       24.1
      fydate |        477        9040           0       9040       9040
       fyear |        477        1985           0       1985       1985

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