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

    RELATED |
   FACTOR 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,591       95.91       95.91
          1 |          2        0.02       95.93
          2 |         17        0.17       96.10
          3 |          8        0.08       96.18
          4 |         11        0.11       96.29
          5 |         22        0.22       96.51
          6 |          5        0.05       96.56
          7 |          2        0.02       96.58
         14 |         43        0.43       97.01
         15 |         13        0.13       97.14
         16 |         27        0.27       97.41
         17 |          6        0.06       97.47
         18 |         15        0.15       97.62
         19 |         87        0.87       98.49
         20 |         83        0.83       99.32
         21 |          8        0.08       99.40
         99 |         60        0.60      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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