Frequencies for first 10,000 rows of cf2 variable in accident dataset :

    RELATED |
   FACTOR 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,864       98.64       98.64
          1 |          1        0.01       98.65
          3 |          2        0.02       98.67
          4 |          4        0.04       98.71
         14 |          1        0.01       98.72
         15 |          4        0.04       98.76
         19 |         11        0.11       98.87
         21 |          2        0.02       98.89
         22 |          2        0.02       98.91
         99 |        109        1.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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