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

      first |
    harmful |
      event |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        979        9.79        9.79
          2 |          6        0.06        9.85
          3 |         12        0.12        9.97
          5 |         59        0.59       10.56
          7 |         13        0.13       10.69
          8 |      1,774       17.74       28.43
          9 |        397        3.97       32.40
         10 |         27        0.27       32.67
         11 |         34        0.34       33.01
         12 |      3,452       34.52       67.53
         14 |        124        1.24       68.77
         15 |         63        0.63       69.40
         16 |          4        0.04       69.44
         17 |         37        0.37       69.81
         18 |         40        0.40       70.21
         19 |         17        0.17       70.38
         20 |          8        0.08       70.46
         21 |         27        0.27       70.73
         23 |         20        0.20       70.93
         24 |        213        2.13       73.06
         25 |         98        0.98       74.04
         26 |         10        0.10       74.14
         30 |        205        2.05       76.19
         31 |         92        0.92       77.11
         32 |        109        1.09       78.20
         33 |        405        4.05       82.25
         34 |        227        2.27       84.52
         35 |        255        2.55       87.07
         38 |        148        1.48       88.55
         39 |         46        0.46       89.01
         40 |          9        0.09       89.10
         41 |         21        0.21       89.31
         42 |        665        6.65       95.96
         43 |         91        0.91       96.87
         44 |          2        0.02       96.89
         45 |          6        0.06       96.95
         46 |         15        0.15       97.10
         48 |          4        0.04       97.14
         49 |          3        0.03       97.17
         50 |          1        0.01       97.18
         51 |          3        0.03       97.21
         52 |         49        0.49       97.70
         53 |         67        0.67       98.37
         54 |          5        0.05       98.42
         57 |          3        0.03       98.45
         58 |         28        0.28       98.73
         59 |        111        1.11       99.84
         72 |          2        0.02       99.86
         73 |          1        0.01       99.87
         99 |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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