Frequencies for first 10,000 rows of sex variable in nhamcsed2015 dataset :

Patient sex |      Freq.     Percent        Cum.
------------+-----------------------------------
     Female |      5,464       54.64       54.64
       Male |      4,536       45.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017