Frequencies for first 10,000 rows of otherbld variable in nhamcsed2015 dataset 

Other blood |
       test |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      8,061       80.61       80.61
        Yes |      1,939       19.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017