Frequencies for first 10,000 rows of mager9 variable in natl2009 dataset :

   Mother's |
 Age Recode |
      9 U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         20        0.20        0.20
          2 |      1,227       12.27       12.47
          3 |      2,887       28.87       41.34
          4 |      2,950       29.50       70.84
          5 |      1,902       19.02       89.86
          6 |        823        8.23       98.09
          7 |        178        1.78       99.87
          8 |         12        0.12       99.99
          9 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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