Frequencies for man_coll variable in person dataset :

  Manner of |
  Collision |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        796       60.21       60.21
          1 |         50        3.78       63.99
          2 |        213       16.11       80.11
          3 |          3        0.23       80.33
          4 |        228       17.25       97.58
          5 |         17        1.29       98.87
          6 |         15        1.13      100.00
------------+-----------------------------------
      Total |      1,322      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016