Frequencies for first 10,000 rows of totproc variable in nhamcsed2000 dataset :

 total # of |
 procedures |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,509       55.09       55.09
          1 |      3,675       36.75       91.84
          2 |        452        4.52       96.36
          3 |         80        0.80       97.16
          4 |          7        0.07       97.23
          5 |          4        0.04       97.27
          6 |          1        0.01       97.28
         99 |        272        2.72      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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