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

      first |
    harmful |
      event |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        847        8.47        8.47
          2 |          3        0.03        8.50
          3 |         15        0.15        8.65
          5 |         57        0.57        9.22
          6 |          1        0.01        9.23
          7 |         11        0.11        9.34
          8 |      1,874       18.74       28.08
          9 |        374        3.74       31.82
         10 |         34        0.34       32.16
         11 |         32        0.32       32.48
         12 |      3,521       35.21       67.69
         14 |        104        1.04       68.73
         15 |         76        0.76       69.49
         16 |          2        0.02       69.51
         17 |         31        0.31       69.82
         18 |         56        0.56       70.38
         19 |         13        0.13       70.51
         20 |          6        0.06       70.57
         21 |         25        0.25       70.82
         23 |         31        0.31       71.13
         24 |        210        2.10       73.23
         25 |         97        0.97       74.20
         26 |          5        0.05       74.25
         30 |        192        1.92       76.17
         31 |         55        0.55       76.72
         32 |        112        1.12       77.84
         33 |        499        4.99       82.83
         34 |        248        2.48       85.31
         35 |        217        2.17       87.48
         38 |        114        1.14       88.62
         39 |         35        0.35       88.97
         40 |          6        0.06       89.03
         41 |         31        0.31       89.34
         42 |        646        6.46       95.80
         43 |         78        0.78       96.58
         44 |          9        0.09       96.67
         45 |          4        0.04       96.71
         46 |         13        0.13       96.84
         48 |          2        0.02       96.86
         49 |          2        0.02       96.88
         50 |          1        0.01       96.89
         52 |         47        0.47       97.36
         53 |         61        0.61       97.97
         54 |         10        0.10       98.07
         57 |         13        0.13       98.20
         58 |         24        0.24       98.44
         59 |        127        1.27       99.71
         72 |          6        0.06       99.77
         73 |          4        0.04       99.81
         99 |         19        0.19      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016