PMID- 34194961 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210702 IS - 2211-3355 (Print) IS - 2211-3355 (Electronic) IS - 2211-3355 (Linking) VI - 23 DP - 2021 Sep TI - Alcohol and drug consumption among motor vehicle drivers in the Brittany region of France: A 9-year cross-sectional population study. PG - 101454 LID - 10.1016/j.pmedr.2021.101454 [doi] LID - 101454 AB - The primary objective of the present study was to evaluate the frequency of positive tests for alcohol and drugs during roadside testing or after road accidents among drivers in the Brittany region of France. The study's secondary objective was to describe the blood concentrations of the substances found during these tests, in order to provide a scientific basis for the establishment or modification of legislative threshold values for road injuries prevention. We performed a cross-sectional study of a database compiled by Rennes University Hospital's toxicology laboratory in the Brittany region of France between 2010 and 2018. Driver's age, sex, and test status (positive or negative), and blood levels of ethanol, 9-tetrahydrocannabinol (THC), methylene dioxymethamphetamine (MDMA), amphetamine, benzoylecgonine and 6-monoacetylmorphine (6-MAM) were collected. Twelve thousand four hundred and ninety-seven drivers (males: 86.1%; median (range) age: 29 (15-94)) have provided roadside blood samples, giving a total of 25,998 test results. Among the 10,996 drivers with at least one positive test, the median blood concentrations of ethanol, THC, MDMA, amphetamine, benzoylecgonine, and 6-MAM were respectively 1.82 g/L, 2.41 ng/mL, 138.4 ng/mL, 67.7 ng/mL, 173.3 ng/mL, and 0.97 ng/mL. 1159 (10.54%) of the 10,996 drivers tested positive for two or more substances, and 151 (1.4%) tested positive for three or more substances. With the exception of heroin, the currently recommended threshold values appear to be appropriate for road injuries prevention with regard to the concentrations observed in offenders. CI - (c) 2021 The Author(s). FAU - Le Dare, Brendan AU - Le Dare B AD - Rennes University Hospital, Forensic Toxicology Laboratory, F-35000 Rennes, France. AD - Univ. Rennes, INSERM, INRA, CHU Rennes, Institut NuMeCan (Nutrition, Metabolism and Cancer), F-35000 Rennes, France. FAU - Degremont, Adeline AU - Degremont A AD - Rennes University Hospital, Pharmacovigilance, Pharmacoepidemiology and Drug Information Centre, Department of Clinical Pharmacology, F-35033 Rennes, France. AD - Univ Rennes, EA 7449 REPERES 'Pharmacoepidemiology and Health Services Research', F-35000 Rennes, France. FAU - Couty, Clemence AU - Couty C AD - Rennes University Hospital, Forensic Toxicology Laboratory, F-35000 Rennes, France. FAU - Baert, Alain AU - Baert A AD - Rennes University Hospital, Department of Forensic Medicine, F-35000 Rennes, France. FAU - Bouvet, Renaud AU - Bouvet R AD - Rennes University Hospital, Department of Forensic Medicine, F-35000 Rennes, France. AD - Univ. Rennes, EA IDPSP - UR1_RS438, F-35000 Rennes, France. FAU - Morel, Isabelle AU - Morel I AD - Rennes University Hospital, Forensic Toxicology Laboratory, F-35000 Rennes, France. AD - Univ. Rennes, INSERM, INRA, CHU Rennes, Institut NuMeCan (Nutrition, Metabolism and Cancer), F-35000 Rennes, France. FAU - Gicquel, Thomas AU - Gicquel T AD - Rennes University Hospital, Forensic Toxicology Laboratory, F-35000 Rennes, France. AD - Univ. Rennes, INSERM, INRA, CHU Rennes, Institut NuMeCan (Nutrition, Metabolism and Cancer), F-35000 Rennes, France. LA - eng PT - Journal Article DEP - 20210617 PL - United States TA - Prev Med Rep JT - Preventive medicine reports JID - 101643766 PMC - PMC8227838 OTO - NOTNLM OT - Cross sectional study OT - Descriptive epidemiology OT - Motor vehicle OT - Policy OT - Prevention OT - Public health COIS- The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2021/07/02 06:00 MHDA- 2021/07/02 06:01 PMCR- 2021/06/17 CRDT- 2021/07/01 07:01 PHST- 2020/11/05 00:00 [received] PHST- 2021/04/19 00:00 [revised] PHST- 2021/04/25 00:00 [accepted] PHST- 2021/07/01 07:01 [entrez] PHST- 2021/07/02 06:00 [pubmed] PHST- 2021/07/02 06:01 [medline] PHST- 2021/06/17 00:00 [pmc-release] AID - S2211-3355(21)00144-3 [pii] AID - 101454 [pii] AID - 10.1016/j.pmedr.2021.101454 [doi] PST - epublish SO - Prev Med Rep. 2021 Jun 17;23:101454. doi: 10.1016/j.pmedr.2021.101454. eCollection 2021 Sep.