Frequencies for first 10,000 rows of sex variable in demo2011q2 dataset :

   Code for |
  patient's |
        sex |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        738        7.38        7.38
          F |      5,806       58.06       65.44
          M |      3,455       34.55       99.99
        UNK |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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