Frequencies for impact1 variable in vehnit dataset :

    INITIAL |
     IMPACT |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          4        0.31        0.31
          1 |         31        2.44        2.75
          2 |         19        1.49        4.25
          3 |         58        4.56        8.81
          4 |         26        2.04       10.85
          5 |         51        4.01       14.86
          6 |        487       38.29       53.14
          7 |         95        7.47       60.61
          8 |         33        2.59       63.21
          9 |        132       10.38       73.58
         10 |         34        2.67       76.26
         11 |         59        4.64       80.90
         12 |        155       12.19       93.08
         13 |         20        1.57       94.65
         14 |          1        0.08       94.73
         18 |          7        0.55       95.28
         99 |         60        4.72      100.00
------------+-----------------------------------
      Total |      1,272      100.00

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