Frequencies for first 10,000 rows of mager14 variable in natlterr2010 dataset :

   Mother's |
 Age Recode |
     14 U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         22        0.22        0.22
          3 |         77        0.77        0.99
          4 |        156        1.56        2.55
          5 |        268        2.68        5.23
          6 |        412        4.12        9.35
          7 |        507        5.07       14.42
          8 |      2,798       27.98       42.40
          9 |      2,538       25.38       67.78
         10 |      1,918       19.18       86.96
         11 |      1,047       10.47       97.43
         12 |        242        2.42       99.85
         13 |         14        0.14       99.99
         14 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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