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

      FIRST |
    HARMFUL |
      EVENT |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        999        9.99        9.99
          2 |          2        0.02       10.01
          3 |         12        0.12       10.13
          5 |         80        0.80       10.93
          7 |         14        0.14       11.07
          8 |      1,683       16.83       27.90
          9 |        304        3.04       30.94
         10 |         48        0.48       31.42
         11 |         21        0.21       31.63
         12 |      3,774       37.74       69.37
         13 |        171        1.71       71.08
         14 |        124        1.24       72.32
         15 |         28        0.28       72.60
         16 |          4        0.04       72.64
         17 |         36        0.36       73.00
         18 |         36        0.36       73.36
         19 |         14        0.14       73.50
         20 |          3        0.03       73.53
         21 |         23        0.23       73.76
         22 |          6        0.06       73.82
         23 |         38        0.38       74.20
         24 |        239        2.39       76.59
         25 |         60        0.60       77.19
         26 |          4        0.04       77.23
         27 |        111        1.11       78.34
         28 |          3        0.03       78.37
         29 |         16        0.16       78.53
         30 |        208        2.08       80.61
         31 |         91        0.91       81.52
         32 |        121        1.21       82.73
         33 |        400        4.00       86.73
         34 |        144        1.44       88.17
         35 |        102        1.02       89.19
         36 |         22        0.22       89.41
         37 |         81        0.81       90.22
         38 |        119        1.19       91.41
         39 |         28        0.28       91.69
         40 |          4        0.04       91.73
         41 |         26        0.26       91.99
         42 |        597        5.97       97.96
         43 |        160        1.60       99.56
         44 |          2        0.02       99.58
         45 |          7        0.07       99.65
         46 |          7        0.07       99.72
         47 |          1        0.01       99.73
         48 |          2        0.02       99.75
         99 |         25        0.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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