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

    RELATED |
   FACTOR 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,888       98.88       98.88
          1 |          1        0.01       98.89
          3 |          1        0.01       98.90
          4 |          1        0.01       98.91
         14 |          9        0.09       99.00
         15 |          3        0.03       99.03
         16 |          1        0.01       99.04
         19 |          1        0.01       99.05
         20 |          1        0.01       99.06
         21 |          1        0.01       99.07
         22 |          1        0.01       99.08
         99 |         92        0.92      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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