Frequencies for seq4 variable in vehicle dataset :

    EVENT 4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          5        0.80        0.80
         12 |          1        0.16        0.96
         99 |        620       99.04      100.00
------------+-----------------------------------
      Total |        626      100.00

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