Frequencies for first 10,000 rows of mager9 variable in natl2007 dataset :

   Mother's |
 Age Recode |
      9 U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          4        0.04        0.04
          2 |      1,001       10.01       10.05
          3 |      3,029       30.29       40.34
          4 |      2,880       28.80       69.14
          5 |      1,881       18.81       87.95
          6 |        943        9.43       97.38
          7 |        239        2.39       99.77
          8 |         20        0.20       99.97
          9 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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