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

     Biopsy |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,846       98.46       98.46
        Yes |        154        1.54      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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