Frequencies for mdc variable in drg2mdcxw2001 dataset :

      Major |
 Diagnostic |
   Category |
      (MDC) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         12        2.37        2.37
          1 |         35        6.92        9.29
          2 |         13        2.57       11.86
          3 |         31        6.13       17.98
          4 |         29        5.73       23.72
          5 |         49        9.68       33.40
          6 |         40        7.91       41.30
          7 |         20        3.95       45.26
          8 |         56       11.07       56.32
          9 |         28        5.53       61.86
         10 |         17        3.36       65.22
         11 |         32        6.32       71.54
         12 |         19        3.75       75.30
         13 |         17        3.36       78.66
         14 |         15        2.96       81.62
         15 |          7        1.38       83.00
         16 |          8        1.58       84.58
         17 |         17        3.36       87.94
         18 |          9        1.78       89.72
         19 |          9        1.78       91.50
         20 |          4        0.79       92.29
         21 |         17        3.36       95.65
         22 |          8        1.58       97.23
         23 |          7        1.38       98.62
         24 |          4        0.79       99.41
         25 |          3        0.59      100.00
------------+-----------------------------------
      Total |        506      100.00

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