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

      RACER |
   imputed? |      Freq.     Percent        Cum.
------------+-----------------------------------
not imputed |      8,865       88.65       88.65
    imputed |      1,135       11.35      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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