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

    RELATED |
   FACTOR 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,596       95.96       95.96
          2 |         17        0.17       96.13
          3 |          7        0.07       96.20
          4 |         15        0.15       96.35
          5 |         18        0.18       96.53
          6 |          1        0.01       96.54
          7 |          4        0.04       96.58
         14 |         55        0.55       97.13
         15 |          6        0.06       97.19
         16 |         29        0.29       97.48
         17 |          2        0.02       97.50
         18 |         20        0.20       97.70
         19 |         96        0.96       98.66
         20 |         78        0.78       99.44
         21 |          1        0.01       99.45
         99 |         55        0.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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