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Rattfylleriets omfattning: en metodstudie i Södermanlands, Örebro och Östergötlands län
Swedish National Road and Transport Research Institute.ORCID iD: 0000-0003-4680-4795
Swedish National Road and Transport Research Institute.ORCID iD: 0000-0002-5198-8851
2007 (Swedish)Report (Other academic)Alternative title
The prevalence of drink driving. A methodological study in three Swedish counties (English)
Abstract [sv]

This report presents the results from a study with the aim of estimating the prevalence of drink driving in three Swedish counties, as well as testing the used method in practice. Data was collected by the police that conducted breath tests of drivers of passenger cars and light trucks on randomly selected road sections. The planned sample size was 25,000 drivers, but due to missing data, 22,937 drivers were finally used in the calculations. The study was conducted between 7 am and 11 pm all days of the week during the period June 2006 to May 2007. The estimated prevalence of drink driving is 0.24 % (0.15 %; 0.32 %) where the numbers in parenthesis is a 95 per cent confidence interval. The results show significant difference in the prevalence of drink driving between men and women (0.32 and 0.04 per cent). Differences between different age groups are also present; the prevalence is lower for youngest group (16-34 years) than for the two other groups (25-64 years and over 65 years). Drink driving also turned out to be more prevalent in the morning than in the afternoon/evening, 0.62 against 0.11 per cent. In general, the method worked well, but a few things need to be changed in a future study. For example, we must ensure that the control sites are safe for the policemen also in the dark and in bad weather. It is also necessary to discuss how the police can get sufficient resources to conduct the survey.

Place, publisher, year, edition, pages
Linköping: VTI., VTI rapport 599 , 2007. , 41 p.
VTI rapport, ISSN 0347-6030
Keyword [en]
Drunken driving, Measurement, Data acquisition, Breath test, Police, Statistics, Method, Evaluation
Research subject
Road: Traffic safety and accidents, Road: Alcohol and drugs
URN: urn:nbn:se:vti:diva-6456OAI: diva2:675333
Available from: 2013-12-03 Created: 2013-12-03 Last updated: 2016-02-25

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Forsman, ÅsaGustafsson, Susanne
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