Frequencies for first 10,000 rows of f_tobac variable in natlterr2005 dataset :

Tobacco use |
          U |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,477       54.77       54.77
          1 |      4,523       45.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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