Frequencies for mdc variable in drg2013 dataset :

      Major |
 Diagnostic |
   Category |
      (MDC) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         26        2.60        2.60
          1 |         75        7.51       10.11
          2 |         10        1.00       11.11
          3 |         25        2.50       13.61
          4 |         40        4.00       17.62
          5 |         88        8.81       26.43
          6 |         61        6.11       32.53
          7 |         36        3.60       36.14
          8 |         99        9.91       46.05
          9 |         32        3.20       49.25
         10 |         26        2.60       51.85
         11 |         43        4.30       56.16
         12 |         21        2.10       58.26
         13 |         25        2.50       60.76
         14 |         15        1.50       62.26
         15 |          7        0.70       62.96
         16 |         15        1.50       64.46
         17 |         27        2.70       67.17
         18 |         17        1.70       68.87
         19 |          9        0.90       69.77
         20 |          4        0.40       70.17
         21 |         20        2.00       72.17
         22 |          6        0.60       72.77
         23 |         10        1.00       73.77
         24 |          8        0.80       74.57
         25 |          6        0.60       75.18
          . |        248       24.82      100.00
------------+-----------------------------------
      Total |        999      100.00

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