Key result
Ethanol intake demonstrated a positive dose-response relationship with increased standard deviation of lateral position in both the driving simulator and on a real test track (p<0.001 for both).
Why the study?
Does ethanol affect driving performance in a simulator consistently with real driving?
Population
20 healthy male volunteers
Comparison
Ethanol titrated to blood alcohol concentration… vs Sober (placebo drinks and placebo pills)
Design
RCT, randomised, cross-over, single-blind
Follow-up
1h duration per trial
Authors
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Driving simulators reliably detect ethanol impairment; confirms SDLP external validity as a surrogate for real-world driving studies.
RCT (n=20)
Single-blind
Cross-over
Does ethanol affect driving performance in a simulator consistently with real driving?
p-value: p=<0.001
SDLP in a driving simulator is a sensitive measure of ethanol-impaired driving, showing relative external validity compared to real driving.
Helland et al. (2013) conducted an RCT in Healthy (n=20). Ethanol vs. Sober (placebo drinks and pills) was evaluated on Standard deviation of lateral position (SDLP; "weaving") (p=<0.001). Ethanol intake demonstrated a positive dose-response relationship with increased standard deviation of lateral position in both the driving simulator and on a real test track (p<0.001 for both).
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