Well-designed studies on the economic impact of policy changes: 1. are based on objective measures; 2. use data several years before and after policy implementation; 3. use appropriate statistical tests which test for significance, controlling for underlying trends and fluctuations in data; and 4. control for changes in economic conditions. A large number of studies have examined the effect of smoke-free policies in the hospitality industry. Studies vary greatly in methodological quality. To facilitate greater analysis of methodological quality and overall trends in findings, we have compiled and summarised the publication details, key features and findings of all available studies.We attempted to locate all studies in the English language that purported to predict or assess the economic impact of smoke-free policies in the hospitality industry.
2005 article, revised in 2008