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

      First |
    Harmful |
      Event |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,127       11.27       11.27
          2 |          7        0.07       11.34
          3 |         26        0.26       11.60
          4 |          4        0.04       11.64
          5 |         85        0.85       12.49
          6 |          2        0.02       12.51
          7 |         20        0.20       12.71
          8 |      1,737       17.37       30.08
          9 |        265        2.65       32.73
         10 |         85        0.85       33.58
         11 |         17        0.17       33.75
         12 |      3,606       36.06       69.81
         13 |         37        0.37       70.18
         14 |        227        2.27       72.45
         15 |         10        0.10       72.55
         16 |         32        0.32       72.87
         18 |         17        0.17       73.04
         19 |        163        1.63       74.67
         20 |        473        4.73       79.40
         21 |         79        0.79       80.19
         22 |        280        2.80       82.99
         23 |        112        1.12       84.11
         24 |        297        2.97       87.08
         25 |         52        0.52       87.60
         26 |         86        0.86       88.46
         27 |        473        4.73       93.19
         28 |        266        2.66       95.85
         29 |         84        0.84       96.69
         31 |        193        1.93       98.62
         32 |         44        0.44       99.06
         33 |         87        0.87       99.93
         99 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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