Frequencies for mdc variable in drg2001 dataset :

      Major |
 Diagnostic |
   Category |
      (MDC) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         10        1.96        1.96
          1 |         35        6.85        8.81
          2 |         13        2.54       11.35
          3 |         31        6.07       17.42
          4 |         29        5.68       23.09
          5 |         44        8.61       31.70
          6 |         40        7.83       39.53
          7 |         20        3.91       43.44
          8 |         54       10.57       54.01
          9 |         28        5.48       59.49
         10 |         17        3.33       62.82
         11 |         32        6.26       69.08
         12 |         19        3.72       72.80
         13 |         17        3.33       76.13
         14 |         15        2.94       79.06
         15 |          7        1.37       80.43
         16 |          8        1.57       82.00
         17 |         17        3.33       85.32
         18 |          9        1.76       87.08
         19 |          9        1.76       88.85
         20 |          1        0.20       89.04
         21 |         17        3.33       92.37
         22 |          8        1.57       93.93
         23 |          7        1.37       95.30
         24 |          4        0.78       96.09
         25 |          3        0.59       96.67
          . |         17        3.33      100.00
------------+-----------------------------------
      Total |        511      100.00

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