Frequencies for first 10,000 rows of edappt variable in nhamcsed1993 dataset :

  return to |
       ed - |
appointment |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,479       94.79       94.79
          1 |        521        5.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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