Frequencies for first 10,000 rows of sex variable in nhamcsed2010 dataset :

Patient Sex |      Freq.     Percent        Cum.
------------+-----------------------------------
     female |      5,433       54.33       54.33
       male |      4,567       45.67      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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