Frequencies for first 10,000 rows of gestat3 variable in natlterr1994 dataset :

  Gestation |
   Recode 3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,157       11.57       11.57
          2 |      8,833       88.33       99.90
          3 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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