Frequencies for m_harm variable in vehnit dataset :

       MOST |
    HARMFUL |
      EVENT |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          1        0.09        0.09
          2 |          1        0.09        0.18
          7 |          1        0.09        0.27
          8 |         32        2.87        3.14
          9 |          1        0.09        3.23
         12 |        805       72.13       75.36
         13 |         12        1.08       76.43
         14 |        168       15.05       91.49
         16 |          8        0.72       92.20
         17 |          1        0.09       92.29
         18 |          3        0.27       92.56
         42 |          1        0.09       92.65
         45 |          3        0.27       92.92
         54 |         70        6.27       99.19
         55 |          7        0.63       99.82
         60 |          1        0.09       99.91
         99 |          1        0.09      100.00
------------+-----------------------------------
      Total |      1,116      100.00

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