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

    RELATED |
   FACTOR 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,518       95.18       95.18
          1 |          1        0.01       95.19
          2 |         10        0.10       95.29
          3 |         11        0.11       95.40
          4 |         61        0.61       96.01
          5 |          2        0.02       96.03
          6 |          5        0.05       96.08
          7 |          1        0.01       96.09
         13 |          3        0.03       96.12
         14 |        136        1.36       97.48
         15 |          6        0.06       97.54
         16 |         17        0.17       97.71
         17 |          2        0.02       97.73
         18 |         26        0.26       97.99
         19 |         77        0.77       98.76
         20 |         95        0.95       99.71
         21 |          3        0.03       99.74
         22 |          3        0.03       99.77
         23 |         15        0.15       99.92
         99 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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