Frequencies for m_harm variable in vehicle dataset :

       MOST |
    HARMFUL |
      EVENT |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         39        5.45        5.45
          3 |          2        0.28        5.73
          5 |          8        1.12        6.84
          7 |         16        2.23        9.08
          8 |        183       25.56       34.64
          9 |         23        3.21       37.85
         11 |          1        0.14       37.99
         12 |        327       45.67       83.66
         14 |         13        1.82       85.47
         15 |          3        0.42       85.89
         25 |         12        1.68       87.57
         30 |         32        4.47       92.04
         35 |          1        0.14       92.18
         38 |          5        0.70       92.88
         39 |          9        1.26       94.13
         42 |         30        4.19       98.32
         43 |         12        1.68      100.00
------------+-----------------------------------
      Total |        716      100.00

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