Frequencies for first 10,000 rows of harm_ev variable in accident dataset :

      FIRST |
    HARMFUL |
      EVENT |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,181       11.81       11.81
          2 |          3        0.03       11.84
          3 |         24        0.24       12.08
          5 |         53        0.53       12.61
          6 |          2        0.02       12.63
          7 |         26        0.26       12.89
          8 |      1,433       14.33       27.22
          9 |        263        2.63       29.85
         10 |         35        0.35       30.20
         11 |         17        0.17       30.37
         12 |      3,696       36.96       67.33
         13 |        115        1.15       68.48
         14 |        152        1.52       70.00
         15 |         39        0.39       70.39
         16 |          7        0.07       70.46
         17 |         33        0.33       70.79
         18 |         47        0.47       71.26
         19 |         12        0.12       71.38
         20 |         10        0.10       71.48
         21 |         26        0.26       71.74
         22 |          4        0.04       71.78
         23 |         30        0.30       72.08
         24 |        244        2.44       74.52
         25 |        111        1.11       75.63
         26 |         12        0.12       75.75
         27 |        124        1.24       76.99
         28 |          1        0.01       77.00
         29 |         22        0.22       77.22
         30 |        171        1.71       78.93
         31 |         84        0.84       79.77
         32 |         68        0.68       80.45
         33 |        464        4.64       85.09
         34 |        176        1.76       86.85
         35 |        164        1.64       88.49
         36 |         31        0.31       88.80
         37 |         39        0.39       89.19
         38 |        124        1.24       90.43
         39 |         35        0.35       90.78
         40 |          5        0.05       90.83
         41 |         32        0.32       91.15
         42 |        608        6.08       97.23
         43 |        111        1.11       98.34
         45 |          7        0.07       98.41
         46 |         16        0.16       98.57
         47 |          2        0.02       98.59
         48 |          5        0.05       98.64
         49 |          1        0.01       98.65
         50 |          2        0.02       98.67
         51 |          2        0.02       98.69
         52 |         28        0.28       98.97
         53 |         34        0.34       99.31
         54 |          4        0.04       99.35
         55 |          7        0.07       99.42
         60 |          4        0.04       99.46
         99 |         54        0.54      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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