Frequencies for first 10,000 rows of sex variable in demo2017q4 dataset :

   Code for |
  patient's |
        sex |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        682        6.82        6.82
          F |      5,433       54.33       61.15
          M |      3,883       38.83       99.98
        UNK |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 19 Jun 2018