Frequencies for dr_cf4 variable in vehicle dataset :

    RELATED |
   FACTOR 4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        433       91.74       91.74
          5 |          1        0.21       91.95
         26 |          3        0.64       92.58
         29 |          1        0.21       92.80
         36 |         13        2.75       95.55
         38 |          2        0.42       95.97
         39 |          5        1.06       97.03
         48 |          1        0.21       97.25
         51 |          9        1.91       99.15
         84 |          1        0.21       99.36
         90 |          3        0.64      100.00
------------+-----------------------------------
      Total |        472      100.00

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