Frequencies for first 10,000 rows of pelvic variable in nhamcsopd1998 dataset :

pelvic exam |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,132       91.32       91.32
          1 |        868        8.68      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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