Frequencies for first 10,000 rows of foll_seq variable in demo2005q1 dataset :

        The |
   sequence |
number of a |
   followup |
     report |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,903       89.03       89.03
          1 |        803        8.03       97.06
         11 |          2        0.02       97.08
         13 |          1        0.01       97.09
         19 |          1        0.01       97.10
          2 |        192        1.92       99.02
         21 |          1        0.01       99.03
          3 |         57        0.57       99.60
          4 |         25        0.25       99.85
          5 |          5        0.05       99.90
          6 |          5        0.05       99.95
          7 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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