Dr Jamie Pearce was part of a team of researchers considering the impact of the  introduction of legislation in New Zealand that restricted the  places where people can smoke. The results of the study, published recently, suggested  that whilst the introduction of the smoking legislation has reduced  the rate of hospital admissions due to heart attacks, this effect  may be greater in males, older age groups and those living in more  affluent neighbourhoods. The research was published in the  Australia and New Zealand Journal of Public Health. Reports on the  findings have appeared on the BBC, ITV, national newspapers as well  as various international media outlets. For example, see:

BBC coverage

The paper itself can be found here