Frequencies for first 10,000 rows of immedrfl variable in nhamcsed2009 dataset :

  immediacy |
   imputed? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,103       81.03       81.03
          1 |      1,897       18.97      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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