Frequencies for first 10,000 rows of bdatefl variable in nhamcsopd2011 dataset :

 Birth date |
    imputed |      Freq.     Percent        Cum.
------------+-----------------------------------
Not imputed |      9,764       97.64       97.64
    Imputed |        236        2.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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