Frequencies for first 10,000 rows of sex variable in namcs1997 dataset :

patient sex |      Freq.     Percent        Cum.
------------+-----------------------------------
     Female |      5,798       57.98       57.98
       Male |      4,202       42.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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