Barnett, Ross, Pearce, Jamie, Moon, Graham, Elliott, John and Barnett, Pauline
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), . (doi:10.1111/j.1753-6405.2009.00446.x).
Full text not available from this repository.
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
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.
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