Frequencies for first 10,000 rows of mage8 variable in natlterr2000 dataset :

     Age of |
     Mother |
   recode 8 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         49        0.49        0.49
          2 |      1,926       19.26       19.75
          3 |      3,240       32.40       52.15
          4 |      2,569       25.69       77.84
          5 |      1,447       14.47       92.31
          6 |        627        6.27       98.58
          7 |        132        1.32       99.90
          8 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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