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

    RELATED |
   FACTOR 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,876       98.76       98.76
          2 |          1        0.01       98.77
          5 |          1        0.01       98.78
         14 |         11        0.11       98.89
         15 |          4        0.04       98.93
         16 |          1        0.01       98.94
         19 |         11        0.11       99.05
         21 |          2        0.02       99.07
         22 |          4        0.04       99.11
         99 |         89        0.89      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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