Frequencies for pman_coll variable in parkwork dataset :

  manner of |
  collision |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        936       81.68       81.68
          1 |         45        3.93       85.60
          2 |         31        2.71       88.31
          6 |        116       10.12       98.43
          7 |          8        0.70       99.13
          8 |          2        0.17       99.30
         11 |          3        0.26       99.56
         99 |          5        0.44      100.00
------------+-----------------------------------
      Total |      1,146      100.00

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