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

    RELATED |
   FACTOR 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,490       94.90       94.90
          2 |          3        0.03       94.93
          3 |         19        0.19       95.12
          4 |         31        0.31       95.43
          5 |          8        0.08       95.51
          6 |          2        0.02       95.53
          7 |          2        0.02       95.55
         13 |          1        0.01       95.56
         14 |        158        1.58       97.14
         15 |          3        0.03       97.17
         16 |         17        0.17       97.34
         18 |         23        0.23       97.57
         19 |        107        1.07       98.64
         20 |        101        1.01       99.65
         21 |          2        0.02       99.67
         22 |          2        0.02       99.69
         23 |         17        0.17       99.86
         99 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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