Frequencies for first 10,000 rows of scopproc variable in nhamcsopd2006 dataset :

      scope |
  procedure |
 ordered or |
   provided |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,744       97.44       97.44
        Yes |        256        2.56      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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