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

 creatinine |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,594       85.94       85.94
          1 |      1,406       14.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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