Table 1 :

OR for cannabis intoxication of the risk of being responsible for a fatal crash for car drivers above 18 years old, France, 2001–2003, n=6,932

THC (ng/ml)	Number of drivers	Crude OR	95% CI	Adj* OR	95% CI
THC yes/no	529	3.00	2.31–3.91	1.89	1.43–2.51
0 ≤ THC < 1	6403	1.00	-	1.00	-
1 ≤ THC < 3	220	2.26	1.57–3.26	1.53	1.03–2.27
3 ≤ THC < 5	116	4.54	2.37–8.70	2.84	1.44–5.60
THC ≥ 5	193	3.51	2.22–5.54	2.01	1.24–3.27

^*adjusted for 5 alcohol levels, age, gender