Frequencies for first 10,000 rows of retprn variable in nhamcsed2011 dataset :

  Return if |
    needed, |
PRN/appoint |
       ment |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      6,950       69.50       69.50
        Yes |      3,050       30.50      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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