Frequencies for harm_ev variable in accident dataset :

      First |
    Harmful |
      Event |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         24        4.20        4.20
          5 |          4        0.70        4.90
          7 |          1        0.18        5.08
          8 |        225       39.40       44.48
          9 |         23        4.03       48.51
         11 |          2        0.35       48.86
         12 |        155       27.15       76.01
         13 |          9        1.58       77.58
         14 |         13        2.28       79.86
         22 |          7        1.23       81.09
         23 |          1        0.18       81.26
         24 |         22        3.85       85.11
         25 |          2        0.35       85.46
         30 |         12        2.10       87.57
         31 |          1        0.18       87.74
         32 |          3        0.53       88.27
         35 |         15        2.63       90.89
         36 |          3        0.53       91.42
         37 |          1        0.18       91.59
         38 |          5        0.88       92.47
         39 |          4        0.70       93.17
         42 |         27        4.73       97.90
         43 |         12        2.10      100.00
------------+-----------------------------------
      Total |        571      100.00

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