Frequencies for first 10,000 rows of cbc variable in namcs2014 dataset :

        CBC |
  (complete |
      blood |
     count) |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      8,904       89.04       89.04
        Yes |      1,096       10.96      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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