Another study found that salivary cotinine levels among nonsmoking primary school children decreased by 39% within 10 months after the law took effect.A study found that salivary cotinine levels among nonsmoking adults decreased by 39% within 1 year after the law took effect.In 2006, a nationwide comprehensive smokefree law prohibiting smoking in all indoor areas of workplaces, restaurants, and bars was implemented in Scotland. Another study found that salivary cotinine levels among nonsmoking adult hotel workers decreased by 69% within 4 to 6 weeks after the law took effect.A study found that salivary cotinine levels among nonsmoking adult bar workers decreased by 80% within 1 year after the law took effect.In 2004, a nationwide comprehensive smokefree law prohibiting smoking in all indoor areas of workplaces, restaurants, and bars was implemented in Ireland. 5Įffects of cleaning the air: International Studies in: A study found that urine cotinine levels among nonsmoking bar employees decreased from 35.9 ng/ml to a level so low that it could not be measured within 2 months after the law took effect.In 2010, a statewide comprehensive smokefree law prohibiting smoking in all indoor areas of workplaces, restaurants, and bars was implemented in Michigan. A study found that urine cotinine levels among nonsmoking bar and restaurant employees decreased by 80% within 1 to 2 months after the law took effect.In 2007, a statewide comprehensive smokefree law prohibiting smoking in all indoor areas of workplaces, restaurants, and bars was implemented in Minnesota. Another study found that salivary cotinine levels among nonsmoking adult workers in the state decreased by 85% within 1 year after the law took effect.A study found that salivary cotinine levels among nonsmoking adults decreased by 47.4% within 1 year after the law took effect.In 2003, a statewide comprehensive smokefree law prohibiting smoking in all indoor areas of workplaces, restaurants, and bars was implemented in New York. Effects of cleaning the air: Domestic Studies in:
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