Frequencies for first 10,000 rows of pelvic variable in nhamcsed2012 dataset :

Pelvic exam |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,806       98.06       98.06
        Yes |        194        1.94      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016