Frequencies for harm_ev variable in vehnit dataset :

      FIRST |
    HARMFUL |
      EVENT |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         39        2.63        2.63
          5 |          8        0.54        3.17
          7 |          2        0.14        3.31
          8 |        144        9.72       13.03
          9 |         10        0.68       13.71
         10 |          5        0.34       14.04
         11 |          1        0.07       14.11
         12 |        315       21.27       35.38
         14 |        645       43.55       78.93
         18 |         15        1.01       79.95
         19 |          4        0.27       80.22
         20 |          1        0.07       80.28
         21 |          1        0.07       80.35
         23 |          2        0.14       80.49
         24 |         12        0.81       81.30
         25 |          5        0.34       81.63
         26 |          5        0.34       81.97
         27 |         18        1.22       83.19
         29 |          7        0.47       83.66
         30 |         23        1.55       85.21
         31 |          5        0.34       85.55
         32 |          5        0.34       85.89
         33 |         63        4.25       90.14
         34 |          9        0.61       90.75
         35 |          8        0.54       91.29
         37 |          3        0.20       91.49
         38 |         27        1.82       93.32
         39 |          4        0.27       93.59
         40 |          2        0.14       93.72
         42 |         22        1.49       95.21
         43 |         19        1.28       96.49
         44 |          1        0.07       96.56
         45 |         21        1.42       97.97
         47 |          1        0.07       98.04
         48 |         10        0.68       98.72
         53 |          8        0.54       99.26
         54 |          1        0.07       99.32
         55 |         10        0.68      100.00
------------+-----------------------------------
      Total |      1,481      100.00

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