The findings suggest that a one-hour extension of bar closing hours led to an increase of an average of 20 violent cases at night on weekends per 100,000 people per year. This represents an increase in violence of approximately 16 percent.
The results suggest that the effect occurs both ways. In other words, reducing trading hours by one hour leads to a decrease in violence of the same magnitude as the increase in violence seen if closing hours are increased by one hour.
Lead author Professor Ingeborg Rossow said "These findings echo the results from studies from around the world that you see more violence in cities when you extend trading hours."
The study is based on data from 18 Norwegian cities that expanded or restricted their closing hours by up to two hours in the decade 2000 – 2010. Researchers examined whether these changes affected violence in the city centre on weekend nights. Violence outside the town during the same time window, which was not likely to be affected by changes in closing hours, was used as a control for other factors.
In these 18 cities weekend closing hours were between one and three at night, early by comparison to many cities around the world.
These findings come more than a year after the Norwegian government proposed reducing sales hours for on-premises trading to reduce violence and public nuisance. The proposal was supported by police commissioners but rejected by alcohol businesses and right wing political parties who claimed that reduced sales hours would not reduce violence.
Study co-author Professor Thor Norström said "These findings hold important implications for communities around the world who are struggling to deal with the massive burden of alcohol-related harm. If you want to reduce alcohol-related harm, restricting trading hours of licensed venues seems to be an effective measure."
Full citation: Rossow I. and Norström T. The impact of small changes in bar closing hours on violence: The Norwegian experience from 18 cities. Addiction, 106: doi: 10.1111/j.1360-0443.2011.03643.x
Addiction (www.addictionjournal.org) is a monthly international scientific journal publishing more than 2000 pages every year. Owned by the Society for the Study of Addiction, it has been in continuous publication since 1884.
Addiction is the top journal in the field of substance abuse and is number one in the 2010 ISI Journal Citation Reports © Ranking in the Substance Abuse Category. Addiction publishes peer-reviewed research reports on alcohol, illicit drugs and tobacco, bringing together research conducted within many different disciplines, as well as editorials and other debate pieces.
Addiction's key findings webpage lists the key scientific advances reported in each monthly issue, article by article, in bite-sized chunks. To access this free service, visit www.addictionjournal.org/keyfindings
Jean O'Reilly | EurekAlert!
Self-organising system enables motile cells to form complex search pattern
07.05.2019 | Westfälische Wilhelms-Universität Münster
Mouse studies show minimally invasive route can accurately administer drugs to brain
02.05.2019 | Johns Hopkins Medicine
Engineers at the University of Tokyo continually pioneer new ways to improve battery technology. Professor Atsuo Yamada and his team recently developed a...
With a quantum coprocessor in the cloud, physicists from Innsbruck, Austria, open the door to the simulation of previously unsolvable problems in chemistry, materials research or high-energy physics. The research groups led by Rainer Blatt and Peter Zoller report in the journal Nature how they simulated particle physics phenomena on 20 quantum bits and how the quantum simulator self-verified the result for the first time.
Many scientists are currently working on investigating how quantum advantage can be exploited on hardware already available today. Three years ago, physicists...
'Quantum technologies' utilise the unique phenomena of quantum superposition and entanglement to encode and process information, with potentially profound benefits to a wide range of information technologies from communications to sensing and computing.
However a major challenge in developing these technologies is that the quantum phenomena are very fragile, and only a handful of physical systems have been...
Working group led by physicist Professor Ulrich Nowak at the University of Konstanz, in collaboration with a team of physicists from Johannes Gutenberg University Mainz, demonstrates how skyrmions can be used for the computer concepts of the future
When it comes to performing a calculation destined to arrive at an exact result, humans are hopelessly inferior to the computer. In other areas, humans are...
Scientists develop a molecular recording tool that enables in vivo lineage tracing of embryonic cells
The beginning of new life starts with a fascinating process: A single cell gives rise to progenitor cells that eventually differentiate into the three germ...
29.04.2019 | Event News
17.04.2019 | Event News
15.04.2019 | Event News
20.05.2019 | Materials Sciences
20.05.2019 | Life Sciences
20.05.2019 | Power and Electrical Engineering