Frequencies for first 10,000 rows of gest_imp variable in natlterr2008 dataset :

  Gestation |
    Imputed |
   Flag U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         96        0.96        0.96
          . |      9,904       99.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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