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

  pre-event |
   movement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         66        0.66        0.66
          1 |      6,249       62.49       63.15
          2 |        116        1.16       64.31
          3 |         32        0.32       64.63
          4 |         23        0.23       64.86
          5 |        403        4.03       68.89
          6 |        178        1.78       70.67
          7 |         11        0.11       70.78
          8 |          3        0.03       70.81
          9 |          2        0.02       70.83
         10 |         82        0.82       71.65
         11 |        700        7.00       78.65
         12 |         34        0.34       78.99
         13 |         38        0.38       79.37
         14 |      1,684       16.84       96.21
         15 |        179        1.79       98.00
         16 |          8        0.08       98.08
         17 |         18        0.18       98.26
         98 |         54        0.54       98.80
         99 |        120        1.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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