Frequencies for mdc variable in drg1994 dataset :

      Major |
 Diagnostic |
   Category |
      (MDC) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          9        1.82        1.82
          1 |         35        7.09        8.91
          2 |         13        2.63       11.54
          3 |         31        6.28       17.81
          4 |         29        5.87       23.68
          5 |         44        8.91       32.59
          6 |         40        8.10       40.69
          7 |         20        4.05       44.74
          8 |         50       10.12       54.86
          9 |         28        5.67       60.53
         10 |         17        3.44       63.97
         11 |         32        6.48       70.45
         12 |         19        3.85       74.29
         13 |         17        3.44       77.73
         14 |         15        3.04       80.77
         15 |          7        1.42       82.19
         16 |          8        1.62       83.81
         17 |         17        3.44       87.25
         18 |          9        1.82       89.07
         19 |          9        1.82       90.89
         20 |          5        1.01       91.90
         21 |         17        3.44       95.34
         22 |          6        1.21       96.56
         23 |          7        1.42       97.98
         24 |          4        0.81       98.79
         25 |          3        0.61       99.39
          . |          3        0.61      100.00
------------+-----------------------------------
      Total |        494      100.00

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