Frequencies for first 10,000 rows of gestat3 variable in natl2002 dataset :

  Gestation |
   Recode 3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        965        9.65        9.65
          2 |      8,988       89.88       99.53
          3 |         47        0.47      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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