Frequencies for mdc variable in drg2mdcxw2010 dataset :

      Major |
 Diagnostic |
   Category |
      (MDC) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         25        3.35        3.35
          1 |         75       10.04       13.39
          2 |         10        1.34       14.73
          3 |         25        3.35       18.07
          4 |         40        5.35       23.43
          5 |         88       11.78       35.21
          6 |         61        8.17       43.37
          7 |         36        4.82       48.19
          8 |         99       13.25       61.45
          9 |         29        3.88       65.33
         10 |         26        3.48       68.81
         11 |         43        5.76       74.56
         12 |         21        2.81       77.38
         13 |         25        3.35       80.72
         14 |         15        2.01       82.73
         15 |          7        0.94       83.67
         16 |         15        2.01       85.68
         17 |         27        3.61       89.29
         18 |         17        2.28       91.57
         19 |          9        1.20       92.77
         20 |          4        0.54       93.31
         21 |         20        2.68       95.98
         22 |          6        0.80       96.79
         23 |         10        1.34       98.13
         24 |          8        1.07       99.20
         25 |          6        0.80      100.00
------------+-----------------------------------
      Total |        747      100.00

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