Frequencies for first 10,000 rows of sex variable in namcs2011 dataset :

Patient sex |      Freq.     Percent        Cum.
------------+-----------------------------------
     Female |      5,566       55.66       55.66
       Male |      4,434       44.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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