Frequencies for first 10,000 rows of mageimp variable in natlterr1994 dataset :

     Age of |
     Mother |
 Imputation |
       Flag |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,986       99.86       99.86
          1 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015