Frequencies for first 10,000 rows of lft variable in nhamcsed2010 dataset :

      Liver |
   Function |
      Tests |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      8,793       87.93       87.93
        yes |      1,207       12.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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