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

    RELATED |
   FACTOR 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,885       98.85       98.85
          4 |          2        0.02       98.87
          6 |          1        0.01       98.88
         14 |          9        0.09       98.97
         15 |          1        0.01       98.98
         16 |          1        0.01       98.99
         17 |          1        0.01       99.00
         19 |          5        0.05       99.05
         20 |          2        0.02       99.07
         99 |         93        0.93      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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