Frequencies for first 10,000 rows of immedfl variable in nhamcsed2004 dataset :

        was |
  immediacy |
   of visit |
   imputed? |      Freq.     Percent        Cum.
------------+-----------------------------------
not imputed |      9,652       96.52       96.52
    imputed |        348        3.48      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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