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

  Hepatitis |
    testing |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,928       99.28       99.28
        Yes |         72        0.72      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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