Frequencies for first 10,000 rows of retrned variable in nhamcsed2015 dataset :

  Return to |
         ED |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,407       94.07       94.07
        Yes |        593        5.93      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017