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

      FIRST |
    HARMFUL |
      EVENT |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,173       11.73       11.73
          3 |         28        0.28       12.01
          5 |         62        0.62       12.63
          6 |          2        0.02       12.65
          7 |         21        0.21       12.86
          8 |      1,442       14.42       27.28
          9 |        265        2.65       29.93
         10 |         55        0.55       30.48
         11 |         27        0.27       30.75
         12 |      3,665       36.65       67.40
         13 |        178        1.78       69.18
         14 |        130        1.30       70.48
         15 |         26        0.26       70.74
         16 |          3        0.03       70.77
         17 |         33        0.33       71.10
         18 |         41        0.41       71.51
         19 |         14        0.14       71.65
         20 |          4        0.04       71.69
         21 |         27        0.27       71.96
         22 |          7        0.07       72.03
         23 |         31        0.31       72.34
         24 |        250        2.50       74.84
         25 |         88        0.88       75.72
         26 |         12        0.12       75.84
         27 |        136        1.36       77.20
         28 |          1        0.01       77.21
         29 |         21        0.21       77.42
         30 |        210        2.10       79.52
         31 |        131        1.31       80.83
         32 |         91        0.91       81.74
         33 |        427        4.27       86.01
         34 |        124        1.24       87.25
         35 |        148        1.48       88.73
         36 |         26        0.26       88.99
         37 |         34        0.34       89.33
         38 |        155        1.55       90.88
         39 |         36        0.36       91.24
         40 |          7        0.07       91.31
         41 |         40        0.40       91.71
         42 |        646        6.46       98.17
         43 |        133        1.33       99.50
         44 |          2        0.02       99.52
         45 |         11        0.11       99.63
         46 |         12        0.12       99.75
         47 |          2        0.02       99.77
         48 |          4        0.04       99.81
         49 |          1        0.01       99.82
         99 |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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