Frequencies for first 10,000 rows of mager9 variable in natl2005 dataset :

   Mother's |
 Age Recode |
      9 U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         12        0.12        0.12
          2 |        990        9.90       10.02
          3 |      2,914       29.14       39.16
          4 |      2,783       27.83       66.99
          5 |      1,978       19.78       86.77
          6 |      1,011       10.11       96.88
          7 |        293        2.93       99.81
          8 |         19        0.19      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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