Cardiovascular Effect of Bans on Smoking in Public PlacesA Systematic Review and Meta-Analysis
David G. Meyers, MD, MPH*, ,*,
John S. Neuberger, DrPH, MPH, MBA and
Jianghua He, PhD
* Department of Internal Medicine, University of Kansas School of Medicine, Kansas City, Kansas
Department of Preventive Medicine and Public Health, University of Kansas School of Medicine, Kansas City, Kansas
Department of Biostatistics, University of Kansas School of Medicine, Kansas City, Kansas
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Figure 1 Effects of Community Smoking Bans on Incident Acute Myocardial Infarction (Person-Year Approach)
Meta-analysis results for 11 studies in 10 geographic locations. CI = confidence interval; IRR = incidence rate ratio.
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Figure 2 Funnel Plot of Estimated IRRs
A funnel plot with all points evenly distributed on both sides of the solid vertical line indicates no publication bias. In this plot there are more points to the left of the vertical line, suggesting heterogeneity caused by either variation in length of observation or publication bias. IRR = incidence rate ratio.
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Figure 3 Bubble Plot of Estimated Effects of Smoking Bans (Log of IRR) and the Post-Ban Duration (Years)
The size of the bubbles indicates the weight of each study in the meta-analysis. The trend line indicates the degree to which the incidence rate ratio (IRR) decreases as the duration of the post-ban period increases.
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