Frequencies for pman_coll variable in parkwork dataset :

  manner of |
  collision |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        869       79.80       79.80
          1 |         47        4.32       84.11
          2 |         23        2.11       86.23
          6 |        125       11.48       97.70
          7 |         18        1.65       99.36
          8 |          4        0.37       99.72
          9 |          1        0.09       99.82
         11 |          2        0.18      100.00
------------+-----------------------------------
      Total |      1,089      100.00

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