Frequencies for first 10,000 rows of rectal variable in nhamcsopd2007 dataset :

rectal exam |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,797       97.97       97.97
        yes |        203        2.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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