Frequencies for mdc variable in drg2008 dataset :

      Major |
 Diagnostic |
   Category |
      (MDC) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         24        2.40        2.40
          1 |         75        7.51        9.91
          2 |         10        1.00       10.91
          3 |         25        2.50       13.41
          4 |         40        4.00       17.42
          5 |         88        8.81       26.23
          6 |         61        6.11       32.33
          7 |         36        3.60       35.94
          8 |         99        9.91       45.85
          9 |         29        2.90       48.75
         10 |         26        2.60       51.35
         11 |         43        4.30       55.66
         12 |         21        2.10       57.76
         13 |         25        2.50       60.26
         14 |         15        1.50       61.76
         15 |          7        0.70       62.46
         16 |         15        1.50       63.96
         17 |         27        2.70       66.67
         18 |         17        1.70       68.37
         19 |          9        0.90       69.27
         20 |          4        0.40       69.67
         21 |         20        2.00       71.67
         22 |          6        0.60       72.27
         23 |         10        1.00       73.27
         24 |          8        0.80       74.07
         25 |          6        0.60       74.67
          . |        253       25.33      100.00
------------+-----------------------------------
      Total |        999      100.00

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