Assessing the effects of the introduction of the New Zealand Smokefree Environment Act 2003 on Acute Myocardial Infarction hospital admissions in Christchurch, New Zealand


Barnett, Ross, Pearce, Jamie, Moon, Graham, Elliott, John and Barnett, Pauline (2009) Assessing the effects of the introduction of the New Zealand Smokefree Environment Act 2003 on Acute Myocardial Infarction hospital admissions in Christchurch, New Zealand. Australian and New Zealand Journal of Public Health, 33, (6), 515-520. (doi:10.1111/j.1753-6405.2009.00446.x).

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Description/Abstract

Objective: To examine trends in Acute
Myocardial Infarction (AMI) hospital
admissions in Christchurch, New Zealand
before and after the implementation of the
New Zealand Smokefree Environments Act
2003 in December 2004.

Methods: Data on AMI hospital
admissions to Christchurch Public Hospital
were extracted for the period 2003 to 2006.
Poisson regression was used to calculate
rate ratios by comparing for AMI rates
of hospital admissions before (2003/04)
and after (2005/06) the introduction of
the Smokefree legislation, and to assess
whether there was a significant change
over time.

Results: The introduction of the smokefree
legislation was associated with a 5%
reduction in AMI admissions. The 55-74
age group recorded the greatest decrease
in admissions (9%) and this figure rose to
13% among never smokers in this group.
Reductions were more marked for men.
Adding the effects of area deprivation
increased the reduction to 21% among 55-
74 year olds living in more affluent (quintile
2) areas. Overall however, the statistical
association of changing levels of AMI
admissions with smoking status and with
deprivation was not consistently significant.

Conclusion: At this early stage following
the smokefree legislation, there are hints
emerging of a positive impact on AMI
admissions but these suggestions cannot
yet be treated with certainty. Further
research could usefully evaluate the longerterm
effects of smoking legislation on the
prevalence of smoking and exposure to
second hand smoke, especially in more
deprived urban communities.

Item Type: Article
ISSNs: 1326-0200 (print)
Related URLs:
Keywords: myocardial infarction, hospital admissions, smoking, smokefree environments.
Subjects: G Geography. Anthropology. Recreation > G Geography (General)
R Medicine > RA Public aspects of medicine > RA0421 Public health. Hygiene. Preventive Medicine
Divisions: University Structure - Pre August 2011 > School of Geography > Remote Sensing and Spatial Analysis
ePrint ID: 69683
Date Deposited: 26 Nov 2009
Last Modified: 27 Mar 2014 18:49
URI: http://eprints.soton.ac.uk/id/eprint/69683

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