Frequencies for pdeaths variable in parkwork dataset :

  Fatals in |
    Vehicle |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,034       97.18       97.18
          1 |         29        2.73       99.91
          2 |          1        0.09      100.00
------------+-----------------------------------
      Total |      1,064      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016