Frequencies for first 10,000 rows of retappt variable in namcs2013 dataset :

  Return at |
  specified |
       time |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      2,562       25.62       25.62
        Yes |      7,438       74.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017