Frequencies for first 10,000 rows of m_harm variable in vehicle dataset :

       Most |
    Harmful |
      Event |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,545       15.45       15.45
          2 |        119        1.19       16.64
          3 |         61        0.61       17.25
          4 |          1        0.01       17.26
          5 |         65        0.65       17.91
          6 |          4        0.04       17.95
          7 |         12        0.12       18.07
          8 |      1,237       12.37       30.44
          9 |        163        1.63       32.07
         10 |         48        0.48       32.55
         11 |          4        0.04       32.59
         12 |      5,127       51.27       83.86
         13 |         76        0.76       84.62
         14 |        171        1.71       86.33
         15 |          8        0.08       86.41
         16 |          3        0.03       86.44
         17 |         29        0.29       86.73
         18 |         11        0.11       86.84
         19 |         26        0.26       87.10
         21 |         63        0.63       87.73
         22 |         21        0.21       87.94
         23 |         32        0.32       88.26
         24 |         94        0.94       89.20
         25 |         13        0.13       89.33
         26 |          6        0.06       89.39
         27 |         17        0.17       89.56
         28 |          1        0.01       89.57
         29 |         57        0.57       90.14
         30 |        194        1.94       92.08
         31 |         54        0.54       92.62
         32 |         43        0.43       93.05
         33 |         28        0.28       93.33
         34 |         29        0.29       93.62
         35 |         74        0.74       94.36
         36 |         15        0.15       94.51
         37 |         24        0.24       94.75
         38 |         30        0.30       95.05
         39 |         44        0.44       95.49
         40 |          2        0.02       95.51
         41 |          2        0.02       95.53
         42 |        392        3.92       99.45
         43 |         50        0.50       99.95
         44 |          1        0.01       99.96
         99 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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