Frequencies for first 10,000 rows of totproc variable in nhamcsed1998 dataset :

 total # of |
 procedures |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,604       56.04       56.04
          1 |      3,815       38.15       94.19
          2 |        460        4.60       98.79
          3 |         77        0.77       99.56
          4 |         25        0.25       99.81
          5 |          2        0.02       99.83
          6 |          1        0.01       99.84
         99 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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