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. Author manuscript; available in PMC: 2014 Aug 1.
Published in final edited form as: J Risk Uncertain. 2013 Aug 1;47(1):93–127. doi: 10.1007/s11166-013-9172-x

Table 2A. Relative Likelihood of Causing a Fatal Crash: Drinking vs. Sober Drivers.

Variables Raleigh
(1)		 Hickory
(2)		 Philadelphia
(3)		 Wilkes-Barre
(4)		 Seattle
(5)		 Yakima
(6)		 Milwaukee
(7)		 La Crosse
(8)
Relative two-car fatal crash
risk for drinking drivers (θ)		 1.000 5.828 4.529 1.000 4.907 26.763 1.000 1.750
Relative one-car fatal crash
risk for drinking drivers (λ)		 2.934 1.878 8.110 6.080 20.602 27.763 7.917 5.554
Ratio of drinking to sober
drivers on the road (N)		 0.304 0.293 0.136 0.263 0.150 0.086 0.400 0.571
Degrees of freedom used in
estimation		 3 3 3 3 3 3 3 3
Log likelihood −3,459 −1,020 −5,270 −2,782 −2,265 −1,807 −1,082 −8,887