Frequencies for first 10,000 rows of sexfl variable in nhamcsed2007 dataset :

        sex |
   imputed? |      Freq.     Percent        Cum.
------------+-----------------------------------
not imputed |      9,941       99.41       99.41
    imputed |         59        0.59      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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