Frequencies for first 10,000 rows of sex variable in demo2011q3 dataset :

   Code for |
  patient's |
        sex |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        540        5.40        5.40
          F |      5,961       59.61       65.01
          M |      3,499       34.99      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Dec 2015