Frequencies for first 10,000 rows of foll_seq variable in demo2010q3 dataset :

        The |
   sequence |
number of a |
   followup |
     report |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,946       99.46       99.46
          1 |         32        0.32       99.78
         10 |          1        0.01       99.79
          2 |         10        0.10       99.89
          3 |          7        0.07       99.96
          5 |          3        0.03       99.99
          8 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Dec 2015