Frequencies for mdc variable in drg2mdcxw2008 dataset :

      Major |
 Diagnostic |
   Category |
      (MDC) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         24        3.22        3.22
          1 |         75       10.05       13.27
          2 |         10        1.34       14.61
          3 |         25        3.35       17.96
          4 |         40        5.36       23.32
          5 |         88       11.80       35.12
          6 |         61        8.18       43.30
          7 |         36        4.83       48.12
          8 |         99       13.27       61.39
          9 |         29        3.89       65.28
         10 |         26        3.49       68.77
         11 |         43        5.76       74.53
         12 |         21        2.82       77.35
         13 |         25        3.35       80.70
         14 |         15        2.01       82.71
         15 |          7        0.94       83.65
         16 |         15        2.01       85.66
         17 |         27        3.62       89.28
         18 |         17        2.28       91.55
         19 |          9        1.21       92.76
         20 |          4        0.54       93.30
         21 |         20        2.68       95.98
         22 |          6        0.80       96.78
         23 |         10        1.34       98.12
         24 |          8        1.07       99.20
         25 |          6        0.80      100.00
------------+-----------------------------------
      Total |        746      100.00

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