Frequencies for first 10,000 rows of tobuse variable in natl2003 dataset :

Tobacco Use |
          U |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,704       17.04       17.04
          2 |      8,219       82.19       99.23
          9 |         77        0.77      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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