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Abstract
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OBJECTIVES: The objective of the present study was to describe the results of the blood alcohol determinations made on drivers from the Liege area between July 2007 and December 2012.
METHODS: The results were interpreted according to the sex, to the age, to the circumstances and temporal variation of the blood test. Statistical analysis was performed using R® software.
RESULTS: During this 5-years period, 2725 determinations were done, mainly in the context of road crashes. The mean blood alcohol concentration (BAC) was 1.69 g/L, and 2132 drivers were above the legal threshold. A large majority of offenders (77%) were men, but the mean BAC did not differ significantly between men (1.69 g/L) and women (1.67 g/L). A statistically significant correlation between age and mean BAC can be observed, if we only consider the positive cases. Concerning the temporal variation of the results, lowest mean BACs are observed during the daytime while highest mean BACs are measured during the night. In both cases, no statistically significant difference can be observed if we compare the week and the weekend. Finally, no statistically significant difference in BAC was observed over years.
Language: en |