Frequencies for first 10,000 rows of mar_imp variable in natl2015 dataset :

   Mother's |
    Marital |
     Status |
    Imputed |
      Blank |
    Marital |
 Status not |
    imputed |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         31        0.31        0.31
          . |      9,969       99.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Oct 2016