Frequencies for first 10,000 rows of renal variable in nhamcsopd1995 dataset :

       does |
    patient |
     have - |
    chronic |
      renal |
    failure |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,957       99.57       99.57
          1 |         43        0.43      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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