Frequencies for first 10,000 rows of sex variable in nhamcsopd2005 dataset :

patient sex |      Freq.     Percent        Cum.
------------+-----------------------------------
     female |      6,048       60.48       60.48
       male |      3,952       39.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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