Frequencies for first 10,000 rows of foll_seq variable in demo2004q4 dataset :

        The |
   sequence |
number of a |
   followup |
     report |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,880       88.80       88.80
         #2 |          2        0.02       88.82
          1 |        783        7.83       96.65
         11 |          3        0.03       96.68
          2 |        210        2.10       98.78
          3 |         66        0.66       99.44
         30 |          1        0.01       99.45
          4 |         25        0.25       99.70
          5 |         13        0.13       99.83
          6 |          5        0.05       99.88
          7 |          4        0.04       99.92
          8 |          5        0.05       99.97
          9 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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