Frequencies for first 10,000 rows of foll_seq variable in demo2006q1 dataset :

        The |
   sequence |
number of a |
   followup |
     report |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,977       89.77       89.77
          1 |        711        7.11       96.88
         10 |          1        0.01       96.89
         12 |          2        0.02       96.91
         14 |          1        0.01       96.92
         16 |          1        0.01       96.93
          2 |        191        1.91       98.84
          3 |         55        0.55       99.39
          4 |         33        0.33       99.72
          5 |         11        0.11       99.83
          6 |          8        0.08       99.91
          7 |          4        0.04       99.95
          8 |          2        0.02       99.97
          9 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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