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

      FIRST |
    HARMFUL |
      EVENT |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,215       12.15       12.15
          2 |          1        0.01       12.16
          3 |          9        0.09       12.25
          5 |         62        0.62       12.87
          6 |          2        0.02       12.89
          7 |         21        0.21       13.10
          8 |      1,396       13.96       27.06
          9 |        303        3.03       30.09
         10 |         44        0.44       30.53
         11 |         25        0.25       30.78
         12 |      3,665       36.65       67.43
         13 |         91        0.91       68.34
         14 |        132        1.32       69.66
         15 |         44        0.44       70.10
         16 |          4        0.04       70.14
         17 |         36        0.36       70.50
         18 |         39        0.39       70.89
         19 |          6        0.06       70.95
         20 |          8        0.08       71.03
         21 |         19        0.19       71.22
         22 |          3        0.03       71.25
         23 |         25        0.25       71.50
         24 |        242        2.42       73.92
         25 |        100        1.00       74.92
         26 |         24        0.24       75.16
         27 |        140        1.40       76.56
         28 |          1        0.01       76.57
         29 |         38        0.38       76.95
         30 |        153        1.53       78.48
         31 |        102        1.02       79.50
         32 |         75        0.75       80.25
         33 |        468        4.68       84.93
         34 |        191        1.91       86.84
         35 |        159        1.59       88.43
         36 |         35        0.35       88.78
         37 |         35        0.35       89.13
         38 |        140        1.40       90.53
         39 |         37        0.37       90.90
         40 |          7        0.07       90.97
         41 |         35        0.35       91.32
         42 |        594        5.94       97.26
         43 |         96        0.96       98.22
         44 |          6        0.06       98.28
         45 |          6        0.06       98.34
         46 |         15        0.15       98.49
         47 |          2        0.02       98.51
         48 |          2        0.02       98.53
         50 |          2        0.02       98.55
         51 |          7        0.07       98.62
         52 |         31        0.31       98.93
         53 |         41        0.41       99.34
         54 |         14        0.14       99.48
         55 |          3        0.03       99.51
         60 |          1        0.01       99.52
         99 |         48        0.48      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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