Frequencies for first 10,000 rows of impact1 variable in person dataset :

    INITIAL |
     IMPACT |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        934        9.34        9.34
          1 |        333        3.33       12.67
          2 |        273        2.73       15.40
          3 |        504        5.04       20.44
          4 |         95        0.95       21.39
          5 |         75        0.75       22.14
          6 |        347        3.47       25.61
          7 |        124        1.24       26.85
          8 |         83        0.83       27.68
          9 |        558        5.58       33.26
         10 |        178        1.78       35.04
         11 |        511        5.11       40.15
         12 |      4,552       45.52       85.67
         13 |         23        0.23       85.90
         14 |        320        3.20       89.10
         99 |        363        3.63       92.73
          . |        727        7.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016