Legaliseringsguiden, genomgång av ... - PDF Archive

av Sveriges Radio som rapporterade att den väckte förvåning och bestörtning då risken visade sig vara
mycket högre för alkohol [23]
“
Positive cannabis detection was associated with increased risk of responsibility
(odds ratio 3.32, 95% confidence interval 2.63 to 4.18). A significant dose effect was
identified; the odds ratio increased from 2.18 (1.22 to 3.89) if 0< Δ9-
tetrahydrocannabinol < 1 ng/ml to 4.72 (3.04 to 7.33) if Δ9-tetrahydrocannabinol 5
ng/ml.
...
The prevalence of cannabis (2.9%) estimated for the driving population is similar to
that for alcohol (2.7%). At least 2.5% (1.5% to 3.5%) of fatal crashes were estimated
as being attributable to cannabis, compared with 28.6% for alcohol (26.8% to
30.5%).
— Cannabis intoxication and fatal road crashes in France: population based
case-control study [24]
”
Tabell med riskkvoter från franska rapporten. Högst kvot = högst risk. Promille för alkohol är mätt i
blodet:
Substans
Riskkvot
d9-THC < 1 ng/ml 2.18
d9-THC 1 - 2 ng/ml 2.54
d9-THC 3 - 4 ng/ml 3.78
d9-THC >= 5 ng/ml 4.72
Alkohol < 0.5 promille 3.41
Alkohol 0.5 - 0.8 promille 8.0
Alkohol 0.8 - 1.2 promille 9.32
Alkohol 1.2 - 2.0 promille 15.0
Alkohol >= 2.0 promille 41.8
2012 släppte kanadensiska forskare en rapport där man studerat nio studier med totalt 50000
människor i världen som skadats allvarligt eller avlidit i bilkrasher. Man kommer fram till att risken att
orsaka en olycka under påverkan av cannabis är dubbelt så hög som för nyktra människor. Det gäller
upp till 3 timmar efter att drogen intagits.
“
Drivers who use cannabis up to three hours before driving are twice as likely to
cause a collision as those not under the influence of drugs or alcohol, says a Canadian
study. This is because cannabis impairs brain and motor functions needed for safe
driving, the researchers suggest.
...
The researchers conclude that despite the increased risk posed by cannabis to car
drivers, alcohol remains the substance most often present in crashes. The observed
association between alcohol and crash risk is more significant than that for cannabis,
the study says.
— BBC 2012-02-10 [25]
”
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