The ban on public smoking has caused a fall in heart attack rates of about 10%, a study has found.
Researchers commissioned by the Department of Health have found a far sharper fall than they had expected in the number of heart attacks in England in the year after the ban was imposed in July 2007.
This was truly remarkable news because, as regular readers of this blog and Dr Siegel's blog will know, NHS hospital admissions data clearly show that incidence of acute myocardial infarction (AMI) has continued to decline at the same rate as before the smoking ban.
This posed a problem for Dr Anna Gilmore, the ASH board member who was charged with turning this wholly unexceptional data into a new 'heart miracle'. Earlier junk studies from Scotland (Pell et al., 2008) and Helena, Montana (Sargent, Shephard & Glantz et al., 2004) had claimed a fall in heart attacks of 17% and 40% respectively. Pell did it by ignoring the NHS data set, picking an unusual time-frame and using a very idiosyncratic definition of a heart attack. Glantz did it by simply finding an unusual blip in a very small community.
The story is always the same, and I apologise for boring readers with one null study after another. But spare a thought for Dr Anna Gilmore, whose job it is to turn this mundane data into a newsworthy study showing that the smoking ban has saved thousands of lives. She may be working on it at this very moment.

As expected, there are small discrepancies between the two data sets. (There tends to be slightly more admissions in the April-March set because the timeline goes further back, and Gilmore only shows one year after the ban.) But the story is the same in each—the rate of decline was the same after the ban as it was before.
We therefore conclude that the implementation of smoke-free public places is associated with significant reductions in hospital admissions for myocardial infarction
Smokefree legislation linked to drop in admissions for heart attacks
A 2.4 percent drop in the number of emergency admissions to hospital for a heart attack has been observed following the implementation of smokefree legislation in England, researchers from the University of Bath’s Tobacco Control Research Group have found.
The legislation was introduced on 1 July 2007 and this study, funded by the Department of Health and published this week in the British Medical Journal, is the first to evaluate its impact on heart attacks.
The team, led by Dr Anna Gilmore, Director of the Tobacco Control Research Group, part of the UK Centre for Tobacco Control Studies, found there were 1200 fewer emergency hospital admissions for myocardial infarction, commonly known as heart attacks, in the year after the legislation was introduced...
Dr Gilmore said: “Given the large number of heart attacks in this country each year, even a relatively small reduction has important public health benefits. This study provides further evidence of the benefits of smokefree legislation.”
Huh?!?!!












