Frequencies for first 10,000 rows of dmagerpt variable in natlterr2001 dataset :

   Reported |
     Age of |
     Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
         18 |          4        0.04        0.04
         23 |          1        0.01        0.05
         38 |          1        0.01        0.06
         99 |      9,994       99.94      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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