Frequencies for first 10,000 rows of bdatefl variable in namcs2008 dataset :

 birth date |
   imputed? |      Freq.     Percent        Cum.
------------+-----------------------------------
not imputed |      9,682       96.82       96.82
    imputed |        318        3.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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