Frequencies for first 10,000 rows of totproc variable in nhamcsed1999 dataset :

 total # of |
 procedures |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,837       58.37       58.37
          1 |      3,657       36.57       94.94
          2 |        438        4.38       99.32
          3 |         57        0.57       99.89
          4 |          9        0.09       99.98
          5 |          1        0.01       99.99
          8 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016