Frequencies for first 10,000 rows of foll_seq variable in demo2009q1 dataset :

        The |
   sequence |
number of a |
   followup |
     report |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,656       96.56       96.56
          1 |        221        2.21       98.77
         11 |          1        0.01       98.78
          2 |         76        0.76       99.54
          3 |         17        0.17       99.71
          4 |         14        0.14       99.85
          5 |         11        0.11       99.96
          6 |          3        0.03       99.99
          7 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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