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

pelvic exam |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,667       96.67       96.67
        yes |        333        3.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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