Frequencies for first 10,000 rows of mage8 variable in natl2002 dataset :

     Age of |
     Mother |
   Recode 8 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         16        0.16        0.16
          2 |      1,094       10.94       11.10
          3 |      2,854       28.54       39.64
          4 |      2,630       26.30       65.94
          5 |      2,064       20.64       86.58
          6 |      1,042       10.42       97.00
          7 |        290        2.90       99.90
          8 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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