Frequencies for first 10,000 rows of mage8 variable in natl1998 dataset :

     Age of |
     Mother |
   recode 8 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         49        0.49        0.49
          2 |      1,778       17.78       18.27
          3 |      3,072       30.72       48.99
          4 |      2,674       26.74       75.73
          5 |      1,591       15.91       91.64
          6 |        698        6.98       98.62
          7 |        133        1.33       99.95
          8 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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