Frequencies for first 10,000 rows of tobaced variable in namcs2007 dataset :

    tobacco |
use/exposur |
          e |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,607       96.07       96.07
        yes |        393        3.93      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016