Frequencies for first 10,000 rows of p_crash1 variable in vehicle dataset :

  pre-event |
   movement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         69        0.69        0.69
          1 |      6,266       62.66       63.35
          2 |        115        1.15       64.50
          3 |         32        0.32       64.82
          4 |         26        0.26       65.08
          5 |        399        3.99       69.07
          6 |        176        1.76       70.83
          7 |         11        0.11       70.94
          8 |          3        0.03       70.97
          9 |          2        0.02       70.99
         10 |         82        0.82       71.81
         11 |        692        6.92       78.73
         12 |         33        0.33       79.06
         13 |         40        0.40       79.46
         14 |      1,677       16.77       96.23
         15 |        178        1.78       98.01
         16 |          8        0.08       98.09
         17 |         18        0.18       98.27
         98 |         56        0.56       98.83
         99 |        117        1.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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