Frequencies for first 10,000 rows of nofu variable in nhamcsed2008 dataset :

  no follow |
 up planned |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,602       96.02       96.02
        yes |        398        3.98      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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