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

       most |
    harmful |
      event |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,162       11.62       11.62
          2 |        113        1.13       12.75
          3 |         32        0.32       13.07
          5 |         33        0.33       13.40
          7 |          2        0.02       13.42
          8 |      1,469       14.69       28.11
          9 |        256        2.56       30.67
         10 |         23        0.23       30.90
         11 |         13        0.13       31.03
         12 |      5,122       51.22       82.25
         14 |         74        0.74       82.99
         15 |         59        0.59       83.58
         16 |          1        0.01       83.59
         17 |         17        0.17       83.76
         18 |         34        0.34       84.10
         19 |         15        0.15       84.25
         20 |          4        0.04       84.29
         21 |         25        0.25       84.54
         23 |         20        0.20       84.74
         24 |         75        0.75       85.49
         25 |         44        0.44       85.93
         26 |          2        0.02       85.95
         30 |        191        1.91       87.86
         31 |         15        0.15       88.01
         32 |         24        0.24       88.25
         33 |         86        0.86       89.11
         34 |         38        0.38       89.49
         35 |         60        0.60       90.09
         38 |         36        0.36       90.45
         39 |         34        0.34       90.79
         40 |          1        0.01       90.80
         41 |          6        0.06       90.86
         42 |        591        5.91       96.77
         43 |         33        0.33       97.10
         44 |          1        0.01       97.11
         45 |          2        0.02       97.13
         46 |         16        0.16       97.29
         49 |          1        0.01       97.30
         50 |          1        0.01       97.31
         52 |         21        0.21       97.52
         53 |          5        0.05       97.57
         54 |        170        1.70       99.27
         57 |          3        0.03       99.30
         58 |         13        0.13       99.43
         59 |         31        0.31       99.74
         72 |          1        0.01       99.75
         73 |          4        0.04       99.79
         99 |         21        0.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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