Frequencies for underide variable in vehicle dataset :

UNDERRIDE/O |
    VERRIDE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        734       94.59       94.59
          9 |         42        5.41      100.00
------------+-----------------------------------
      Total |        776      100.00

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