Frequencies for avoid variable in vehicle dataset :

      CRASH |
  AVOIDANCE |
   MANUEVER |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        763       99.87       99.87
          1 |          1        0.13      100.00
------------+-----------------------------------
      Total |        764      100.00

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