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

       Most |
    Harmful |
      Event |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,429       14.29       14.29
          2 |        119        1.19       15.48
          3 |         67        0.67       16.15
          5 |         56        0.56       16.71
          6 |          4        0.04       16.75
          7 |         20        0.20       16.95
          8 |      1,162       11.62       28.57
          9 |        178        1.78       30.35
         10 |         47        0.47       30.82
         11 |          6        0.06       30.88
         12 |      5,348       53.48       84.36
         13 |        162        1.62       85.98
         14 |        128        1.28       87.26
         15 |         27        0.27       87.53
         16 |          1        0.01       87.54
         17 |         28        0.28       87.82
         18 |         27        0.27       88.09
         19 |         22        0.22       88.31
         20 |          1        0.01       88.32
         21 |         31        0.31       88.63
         22 |         23        0.23       88.86
         23 |         18        0.18       89.04
         24 |         92        0.92       89.96
         25 |         19        0.19       90.15
         26 |          5        0.05       90.20
         27 |         18        0.18       90.38
         29 |         61        0.61       90.99
         30 |        167        1.67       92.66
         31 |         30        0.30       92.96
         32 |         29        0.29       93.25
         33 |         25        0.25       93.50
         34 |         41        0.41       93.91
         35 |         58        0.58       94.49
         36 |         19        0.19       94.68
         37 |         17        0.17       94.85
         38 |         42        0.42       95.27
         39 |         34        0.34       95.61
         40 |          2        0.02       95.63
         41 |          4        0.04       95.67
         42 |        390        3.90       99.57
         43 |         43        0.43      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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