Frequencies for first 10,000 rows of otherbld variable in nhamcsopd2006 dataset :

other blood |
       test |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      8,689       86.89       86.89
        Yes |      1,311       13.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016