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

      FIRST |
    HARMFUL |
      EVENT |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,041       10.41       10.41
          3 |         14        0.14       10.55
          5 |         59        0.59       11.14
          6 |          2        0.02       11.16
          7 |         27        0.27       11.43
          8 |      1,502       15.02       26.45
          9 |        300        3.00       29.45
         10 |         36        0.36       29.81
         11 |         32        0.32       30.13
         12 |      3,421       34.21       64.34
         13 |         74        0.74       65.08
         14 |        106        1.06       66.14
         15 |         64        0.64       66.78
         16 |          8        0.08       66.86
         17 |         23        0.23       67.09
         18 |         46        0.46       67.55
         19 |         15        0.15       67.70
         20 |          8        0.08       67.78
         21 |         20        0.20       67.98
         22 |          4        0.04       68.02
         23 |         24        0.24       68.26
         24 |        236        2.36       70.62
         25 |        120        1.20       71.82
         26 |          8        0.08       71.90
         27 |        146        1.46       73.36
         28 |          8        0.08       73.44
         29 |         41        0.41       73.85
         30 |        205        2.05       75.90
         31 |         89        0.89       76.79
         32 |        114        1.14       77.93
         33 |        450        4.50       82.43
         34 |        273        2.73       85.16
         35 |        152        1.52       86.68
         36 |         28        0.28       86.96
         37 |         85        0.85       87.81
         38 |        144        1.44       89.25
         39 |         55        0.55       89.80
         40 |          9        0.09       89.89
         41 |         32        0.32       90.21
         42 |        707        7.07       97.28
         43 |         82        0.82       98.10
         44 |          6        0.06       98.16
         45 |          4        0.04       98.20
         46 |         16        0.16       98.36
         47 |          8        0.08       98.44
         49 |          2        0.02       98.46
         50 |          1        0.01       98.47
         51 |          1        0.01       98.48
         52 |         48        0.48       98.96
         53 |         64        0.64       99.60
         54 |         10        0.10       99.70
         57 |          6        0.06       99.76
         60 |          2        0.02       99.78
         99 |         22        0.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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