Frequencies for first 10,000 rows of sex variable in namcs1999 dataset :

patient sex |      Freq.     Percent        Cum.
------------+-----------------------------------
     Female |      5,650       56.50       56.50
       Male |      4,350       43.50      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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