Frequencies for first 10,000 rows of mage_impflg variable in natl2008 dataset :

   Mother's |
        Age |
  Imputated |
   Flag U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          2        0.02        0.02
          . |      9,998       99.98      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 May 2016