Frequencies for first 10,000 rows of sex variable in namcs2009 dataset :

patient sex |      Freq.     Percent        Cum.
------------+-----------------------------------
     female |      5,645       56.45       56.45
       male |      4,355       43.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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