Frequencies for mdc variable in drg2003 dataset :

      Major |
 Diagnostic |
   Category |
      (MDC) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         13        2.47        2.47
          1 |         34        6.45        8.92
          2 |         13        2.47       11.39
          3 |         31        5.88       17.27
          4 |         29        5.50       22.77
          5 |         50        9.49       32.26
          6 |         40        7.59       39.85
          7 |         20        3.80       43.64
          8 |         55       10.44       54.08
          9 |         28        5.31       59.39
         10 |         17        3.23       62.62
         11 |         32        6.07       68.69
         12 |         19        3.61       72.30
         13 |         17        3.23       75.52
         14 |         15        2.85       78.37
         15 |          7        1.33       79.70
         16 |          8        1.52       81.21
         17 |         16        3.04       84.25
         18 |          9        1.71       85.96
         19 |          9        1.71       87.67
         20 |          4        0.76       88.43
         21 |         17        3.23       91.65
         22 |          8        1.52       93.17
         23 |          7        1.33       94.50
         24 |          4        0.76       95.26
         25 |          3        0.57       95.83
          . |         22        4.17      100.00
------------+-----------------------------------
      Total |        527      100.00

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