Frequencies for first 10,000 rows of foll_seq variable in demo2004q3 dataset :

        The |
   sequence |
number of a |
   followup |
     report |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,442       84.42       84.42
          1 |      1,088       10.88       95.30
         11 |          1        0.01       95.31
         12 |          1        0.01       95.32
          2 |        307        3.07       98.39
          3 |         89        0.89       99.28
          4 |         43        0.43       99.71
          5 |         18        0.18       99.89
          6 |          4        0.04       99.93
          7 |          4        0.04       99.97
          8 |          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