Frequencies for first 10,000 rows of renal variable in natl1997 dataset :

      Renal |
    disease |      Freq.     Percent        Cum.
------------+-----------------------------------
          8 |      9,822       98.22       98.22
          9 |        178        1.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015