Frequencies for first 10,000 rows of racerfl variable in nhamcsed2011 dataset :

      RACER |
   imputed? |      Freq.     Percent        Cum.
------------+-----------------------------------
Not imputed |      8,721       87.21       87.21
    Imputed |      1,279       12.79      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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