Frequencies for pdeaths variable in parkwork dataset :

  fatals in |
    vehicle |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,102       97.26       97.26
          1 |         28        2.47       99.74
          2 |          3        0.26      100.00
------------+-----------------------------------
      Total |      1,133      100.00

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