Frequencies for mdc variable in drg2mdcxw2011 dataset :

      Major |
 Diagnostic |
   Category |
      (MDC) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         26        3.46        3.46
          1 |         75        9.99       13.45
          2 |         10        1.33       14.78
          3 |         25        3.33       18.11
          4 |         40        5.33       23.44
          5 |         88       11.72       35.15
          6 |         61        8.12       43.28
          7 |         36        4.79       48.07
          8 |         99       13.18       61.25
          9 |         32        4.26       65.51
         10 |         26        3.46       68.97
         11 |         43        5.73       74.70
         12 |         21        2.80       77.50
         13 |         25        3.33       80.83
         14 |         15        2.00       82.82
         15 |          7        0.93       83.75
         16 |         15        2.00       85.75
         17 |         27        3.60       89.35
         18 |         17        2.26       91.61
         19 |          9        1.20       92.81
         20 |          4        0.53       93.34
         21 |         20        2.66       96.01
         22 |          6        0.80       96.80
         23 |         10        1.33       98.14
         24 |          8        1.07       99.20
         25 |          6        0.80      100.00
------------+-----------------------------------
      Total |        751      100.00

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