Frequencies for mdc variable in drg2mdcxw1993 dataset :

      Major |
 Diagnostic |
   Category |
      (MDC) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          9        1.83        1.83
          1 |         35        7.13        8.96
          2 |         13        2.65       11.61
          3 |         31        6.31       17.92
          4 |         29        5.91       23.83
          5 |         44        8.96       32.79
          6 |         40        8.15       40.94
          7 |         20        4.07       45.01
          8 |         50       10.18       55.19
          9 |         28        5.70       60.90
         10 |         17        3.46       64.36
         11 |         32        6.52       70.88
         12 |         19        3.87       74.75
         13 |         17        3.46       78.21
         14 |         15        3.05       81.26
         15 |          7        1.43       82.69
         16 |          8        1.63       84.32
         17 |         17        3.46       87.78
         18 |          9        1.83       89.61
         19 |          9        1.83       91.45
         20 |          5        1.02       92.46
         21 |         17        3.46       95.93
         22 |          6        1.22       97.15
         23 |          7        1.43       98.57
         24 |          4        0.81       99.39
         25 |          3        0.61      100.00
------------+-----------------------------------
      Total |        491      100.00

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