Frequencies for first 10,000 rows of gestrec3 variable in natl2010 dataset :

  Gestation |
   Recode 3 |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        945        9.45        9.45
          2 |      9,034       90.34       99.79
          3 |         21        0.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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