Frequencies for first 10,000 rows of cf1 variable in accident dataset :

   Accident |
    Related |
   Factor 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,612       96.12       96.12
          1 |          7        0.07       96.19
          2 |         38        0.38       96.57
          3 |          8        0.08       96.65
          4 |         90        0.90       97.55
          5 |         16        0.16       97.71
          6 |          9        0.09       97.80
          7 |         10        0.10       97.90
         15 |          3        0.03       97.93
         16 |         45        0.45       98.38
         17 |          2        0.02       98.40
         99 |        160        1.60      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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