Frequencies for first 10,000 rows of gestat3 variable in natl2001 dataset :

  Gestation |
   Recode 3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,489       14.89       14.89
          2 |      8,498       84.98       99.87
          3 |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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