Frequencies for first 10,000 rows of asthmaed variable in namcs2002 dataset :

     Asthma |
  education |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,908       99.08       99.08
        Yes |         92        0.92      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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