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

 Birth date |
   imputed? |      Freq.     Percent        Cum.
------------+-----------------------------------
Not imputed |      9,978       99.78       99.78
    Imputed |         22        0.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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