Frequencies for first 10,000 rows of dmagerpt variable in natlterr1999 dataset :

   Reported |
     Age of |
     Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
         21 |          1        0.01        0.01
         99 |      9,999       99.99      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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