Frequencies for first 10,000 rows of sex variable in namcs1995 dataset :

patient sex |      Freq.     Percent        Cum.
------------+-----------------------------------
     Female |      6,070       60.70       60.70
       Male |      3,930       39.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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