[Smoking bans in public places: current epidemiological evidence of cardiovascular health impacts at the population level]

Cardiovascular Events Following Smoke-Free Legislations: An Updated Systematic Review and Meta-Analysis

BACKGROUND

Legislations banning smoking in indoor public places and workplaces are being implemented worldwide to protect the population from secondhand smoke exposure. Several studies have reported reductions in hospitalizations for acute coronary events following the enactment of smoke-free laws.

OBJECTIVE

We set out to conduct a systematic review and meta-analysis of epidemiologic studies examining how legislations that ban smoking in indoor public places impact the risk of acute coronary events.

METHODS

We searched MEDLINE, EMBASE, and relevant bibliographies including previous systematic reviews for studies that evaluated changes in acute coronary events, following implementation of smoke-free legislations. Studies were identified through December 2013. We pooled relative risk (RR) estimates for acute coronary events comparing post- vs. pre-legislation using inverse-variance weighted random-effects models.

RESULTS

Thirty-one studies providing estimates for 47 locations were included. The legislations were implemented between 1991 and 2010. Following the enactment of smoke-free legislations, there was a 12 % reduction in hospitalizations for acute coronary events (pooled RR: 0.88, 95 % CI: 0.85-0.90). Reductions were 14 % in locations that implemented comprehensive legislations compared to an 8 % reduction in locations that only had partial restrictions. In locations with reductions in smoking prevalence post-legislation above the mean (2.1 % reduction) there was a 14 % reduction in events compared to 10 % in locations below the mean. The RRs for acute coronary events associated with enacting smoke-free legislation were 0.87 vs. 0.89 in locations with smoking prevalence pre-legislation above and below the mean (23.1 %), and 0.87 vs. 0.89 in studies from the Americas vs. other regions.

CONCLUSION

The implementation of smoke-free legislations was related to reductions in acute coronary event hospitalizations in most populations evaluated. Benefits are greater in locations with comprehensive legislations and with greater reduction in smoking prevalence post-legislation. These cardiovascular benefits reinforce the urgent need to enact and enforce smoke-free legislations that protect all citizens around the world from exposure to tobacco smoke in public places.

[Tobacco prevention at the regional level, Bavaria as an example]

Tobacco consumption is one of the most relevant behavior-based health risks. It has been estimated that there are 14,000-18,000 tobacco-related deaths each year in Bavaria, Germany. Thus, efficient tobacco prevention, which involves measures of behavior-oriented as well as of condition-oriented prevention at the Federal State level, is a priority objective of prevention politics in Bavaria. Measures of behavior-oriented prevention account for the fact that tobacco prevention affects private lifestyles, where statutory provisions may not be effectual. However, smoking bans have achieved the creation of smoke-free living spaces especially for children and adolescents. In the long term, it is essential to enhance evaluation of tobacco prevention, to pay more attention to sustainability of approved projects, and to ensure a smoke-free environment for children and adolescents. The Bavarian health program "Gesund.Leben.Bayern." is an important platform for this.