Frequencies for first 10,000 rows of foll_seq variable in demo2005q4 dataset :

        The |
   sequence |
number of a |
   followup |
     report |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,339       93.39       93.39
          1 |        465        4.65       98.04
         10 |          1        0.01       98.05
         13 |          2        0.02       98.07
         14 |          1        0.01       98.08
          2 |        113        1.13       99.21
          3 |         48        0.48       99.69
          4 |         15        0.15       99.84
          5 |          7        0.07       99.91
          6 |          5        0.05       99.96
          7 |          2        0.02       99.98
          8 |          1        0.01       99.99
          9 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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