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

      FIRST |
    HARMFUL |
      EVENT |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,011       10.11       10.11
          2 |          6        0.06       10.17
          3 |         17        0.17       10.34
          5 |         69        0.69       11.03
          7 |         25        0.25       11.28
          8 |      1,702       17.02       28.30
          9 |        285        2.85       31.15
         10 |         66        0.66       31.81
         11 |         20        0.20       32.01
         12 |      3,811       38.11       70.12
         13 |        144        1.44       71.56
         14 |        147        1.47       73.03
         15 |         23        0.23       73.26
         16 |          6        0.06       73.32
         17 |         29        0.29       73.61
         18 |         40        0.40       74.01
         19 |         19        0.19       74.20
         20 |          5        0.05       74.25
         21 |         30        0.30       74.55
         22 |         16        0.16       74.71
         23 |         46        0.46       75.17
         24 |        235        2.35       77.52
         25 |         75        0.75       78.27
         26 |         11        0.11       78.38
         27 |         78        0.78       79.16
         28 |          1        0.01       79.17
         29 |         37        0.37       79.54
         30 |        240        2.40       81.94
         31 |         94        0.94       82.88
         32 |         98        0.98       83.86
         33 |        279        2.79       86.65
         34 |        151        1.51       88.16
         35 |        118        1.18       89.34
         36 |         28        0.28       89.62
         37 |        104        1.04       90.66
         38 |        118        1.18       91.84
         39 |         36        0.36       92.20
         40 |          9        0.09       92.29
         41 |         27        0.27       92.56
         42 |        572        5.72       98.28
         43 |        171        1.71       99.99
         44 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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