Frequencies for first 10,000 rows of f_wtgain variable in natlterr2007 dataset :

Weight gain |
    (wtgain |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,686       26.86       26.86
          1 |      7,314       73.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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