Frequencies for first 10,000 rows of bun variable in nhamcsed2002 dataset :

        bun |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,488       84.88       84.88
          1 |      1,512       15.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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