Frequencies for first 10,000 rows of crf variable in namcs2006 dataset :

       does |
patient now |
     have - |
    chronic |
      renal |
    failure |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,901       99.01       99.01
        yes |         99        0.99      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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