Frequencies for first 10,000 rows of cbc variable in namcs2013 dataset :

        CBC |
  (complete |
      blood |
     count) |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      8,847       88.47       88.47
        Yes |      1,153       11.53      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017