Alcohol outlet density and violence: A geographically weighted regression approach
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AbstractIntroduction and AimsWe investigate the relationship between outlet density (of different types) and violence (as measured by police activity) across the North Island of New Zealand, specifically looking at whether the relationships vary spatially.Design and MethodsWe use New Zealand data at the census area unit (approximately suburb) level, on police‐attended violent incidents and outlet density (by type of outlet), controlling for population density and local social deprivation. We employed geographically weighted regression to obtain both global average and locally specific estimates of the relationships between alcohol outlet density and violence.ResultWe find that bar and night club density, and licensed club density (e.g. sports clubs) have statistically significant and positive relationships with violence, with an additional bar or night club is associated with nearly 5.3 additional violent events per year, and an additional licensed club associated with 0.8 additional violent events per year. These relationships do not show significant spatial variation. In contrast, the effects of off‐licence density and restaurant/café density do exhibit significant spatial variation. However, the non‐varying effects of bar and night club density are larger than the locally specific effects of other outlet types.Discussion and ConclusionThe relationships between outlet density and violence vary significantly across space for off‐licences and restaurants/cafés. These results suggest that in order to minimise alcohol‐related harms, such as violence, locally specific policy interventions are likely to be necessary. [Cameron MP, Cochrane W, Gordon C, Livingston M. Alcohol outlet density and violence: A geographically weighted regression approach. Drug Alcohol Rev 2016;35:280–288]
