Frequencies for first 10,000 rows of foll_seq variable in demo2008q1 dataset :

        The |
   sequence |
number of a |
   followup |
     report |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,518       95.18       95.18
          # |          7        0.07       95.25
          1 |        333        3.33       98.58
         16 |          1        0.01       98.59
          2 |         94        0.94       99.53
          3 |         27        0.27       99.80
          4 |         10        0.10       99.90
          5 |          7        0.07       99.97
          6 |          2        0.02       99.99
          9 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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