Frequencies for first 10,000 rows of rectal variable in namcs2009 dataset :

rectal exam |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,755       97.55       97.55
        yes |        245        2.45      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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