Frequencies for first 10,000 rows of spocther variable in namcs2009 dataset :

speech/occu |
   pational |
    therapy |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,972       99.72       99.72
        yes |         28        0.28      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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