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

       does |
   practice |
   set time |
  aside for |
   same day |
appointment |
         s? |      Freq.     Percent        Cum.
------------+-----------------------------------
      blank |        179        1.79        1.79
 don't know |        188        1.88        3.67
        yes |      7,550       75.50       79.17
         no |      2,083       20.83      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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