Frequencies for first 10,000 rows of racerfl variable in nhamcsed2015 dataset :

      RACER |
   imputed? |      Freq.     Percent        Cum.
------------+-----------------------------------
Not imputed |      7,858       78.58       78.58
    Imputed |      2,142       21.42      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017