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Alcohol outlet density is related to police events and motor vehicle accidents in Manukau City, New Zealand

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Authors:
Summary:

This study analysed population, crime, crash and liquor licence data from Manukau City, New Zealand, to establish whether there was a link between alcohol availability and “negative social outcomes”. Data for the Census Area Unit (suburb) level were converted into per-capita measures of alcohol outlet density for January 2009 in regard to off-licence outlets, clubs and bars, restaurants and cafés. Likewise, data on police events and motor vehicle accidents were obtained for the period 1 July 2008 to 30 June 2009 and converted into per capita measures. All three outlet density measures were significantly associated with a range of police events, but only off-licence density was significantly associated with motor vehicle accidents (MVAs). An additional off-licence outlet in a given area was associated with 85.4 additional police events and 10.3 additional MVAs; an additional club or bar was associated with 34.7 additional police events and 0.5 additional MVAs; an additional restaurant or cafe was associated with 13.2 additional police events and 2.1 additional MVAs.

Comment:
The authors state clearly that this study did not prove that higher alcohol outlet density caused police events in Manukau over a 12-month period in 2008/9. However, while the association between off-license density (e.g. more bottle stores, dairies or supermarkets selling alcohol) and MVAs was statistically significant, the study area was small and the results are now over three years old. Another study is required, given the recent change in city infrastructure and considerable lag in time.
Reference: Aust N Z J Public Health 2012;36(6):537-42
Independent commentary by Dr. Matire Hardwood

Dr Matire Harwood (Ngapuhi) has worked in Hauora Māori, primary health and rehabilitation settings as clinician and researcher since graduating from Auckland Medical School in 1994. She also holds positions on a number of boards, committees and advisory groups including the Health Research Council. Matire lives in Auckland with her whānau including partner Haunui and two young children Te Rangiura and Waimarie.

Research Review publications are intended for New Zealand health professionals.

Disclaimer: This publication is not intended as a replacement for regular medical education but to assist in the process. The reviews are a summarised interpretation of the published study and reflect the opinion of the writer rather than those of the research group or scientific journal. It is suggested readers review the full trial data before forming a final conclusion on its merits.

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