Frequencies for pdeaths variable in parkwork dataset :

  fatals in |
    vehicle |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,118       97.56       97.56
          1 |         24        2.09       99.65
          2 |          4        0.35      100.00
------------+-----------------------------------
      Total |      1,146      100.00

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