Frequencies for first 10,000 rows of rectal variable in nhamcsopd2010 dataset :

rectal exam |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,802       98.02       98.02
        yes |        198        1.98      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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