Frequencies for first 10,000 rows of tobaced variable in namcs2012 dataset :

    Tobacco |
use/Exposur |
          e |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,875       98.75       98.75
        Yes |        125        1.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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