Frequencies for avoid variable in vehicle dataset :

      CRASH |
  AVOIDANCE |
   MANEUVER |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        471       99.79       99.79
          8 |          1        0.21      100.00
------------+-----------------------------------
      Total |        472      100.00

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