Frequencies for first 10,000 rows of etoh variable in namcs2014 dataset :

    Alcohol |
      Abuse |
  screening |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,891       98.91       98.91
        Yes |        109        1.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017