Prescription of Antiepileptics and the Risk of Road Traffic Crash

Orriols, Ludivine; Alexandra Foubert‐Samier; Gadegbeku, Blandine; Delorme, Bernard; Tricotel, Aurore; Philip, Pierre; Moore, Nicholas; Lagarde, Emmanuel; · 2013 · Crossref

DOI: 10.1002/jcph.10

archive: archived pipeline: cataloged verified

Get this paper ↗ (DOI — opens at the source; we link to it, we don't host it)

Summary

This study investigates the association between the prescription of antiepileptic drugs (AEDs) and the risk of being responsible for a road traffic crash. The research was motivated by inconsistent prior findings regarding whether epilepsy or its treatment increases crash risk, and the potential for AED side effects, such as drowsiness and cognitive impairment, to impair driving ability. The authors aimed to disentangle the effects of the medication from the underlying disease using large-scale French administrative data. The researchers conducted a retrospective analysis using matched data from three national databases: the national health care insurance database, police reports, and the national police database of injurious crashes. The study included 72,685 drivers involved in crashes between July 2005 and May 2008. Exposure to AEDs was defined by pharmacy dispensing records for drugs predominantly used for epilepsy, categorized into first, second, and third generations. The study employed two analytical approaches: a case-control responsibility analysis comparing drivers deemed responsible for crashes against those not responsible, and a case-crossover analysis comparing exposure periods immediately before the crash against earlier control periods for the same individuals. Severity of epilepsy was proxied by administrative status as a long-term chronic disease. The results indicated that drivers exposed to AEDs on the day of the crash had a significantly increased risk of being responsible for the incident, with an adjusted odds ratio (OR) of 1.74 (95% CI: 1.29–2.34). This risk was even higher for drivers with severe epilepsy (OR 2.20; 95% CI: 1.31–3.69). Significant associations were found for second-generation (OR 2.15) and third-generation (OR 3.01) AEDs, but not for first-generation drugs. However, the case-crossover analysis revealed no significant association between crash risk and AED prescription (OR 0.68; 95% CI: 0.42–1.10). Furthermore, among drivers with severe epilepsy, those not exposed to AEDs on the day of the crash had a similar risk of responsibility (OR 2.91) compared to those who were exposed (OR 2.02). The authors conclude that the increased risk of road traffic crashes among drivers with prescribed antiepileptics is likely attributable to the underlying seizures rather than the acute effects of the medication. The lack of association in the case-crossover analysis suggests no acute deleterious effect of the drugs on driving performance. The findings imply that the risk is driven by the severity of the epileptic condition, particularly in patients with frequent or resistant seizures. Consequently, while the medication itself may not impair driving, patients with epilepsy, especially those with severe symptoms, should be cautioned about their elevated risk of causing crashes.

Provenance

The full processing record for this entry. Every stage of this paper's journey through the pipeline is logged — what ran, with which tool and model, how many attempts it took, and when it last completed.

Summary generated by qwen3.6-27b-prismaquant on 2026-06-26; verification: verified.

Topics

Ranked by relevance to this paper. Hover a topic for its definition.

• medical conditions
• prescription meds

Information type

What kind of knowledge this paper contributes, grouped by family — independent of topic (what it is about) and method (how it was studied).

• Empirical Findings: crash risk outcomes