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Venn diagram showing the overlap between the various spirometric definitions of airway obstruction and respiratory symptoms. **: p<0.01 for difference.

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Presentation on theme: "Venn diagram showing the overlap between the various spirometric definitions of airway obstruction and respiratory symptoms. **: p<0.01 for difference."— Presentation transcript:

1 Venn diagram showing the overlap between the various spirometric definitions of airway obstruction and respiratory symptoms. **: p<0.01 for difference between lower limit of normal (LLN) (for selected population) versus fixed ratio; ***: p<0.001 for LLN ver... Venn diagram showing the overlap between the various spirometric definitions of airway obstruction and respiratory symptoms. **: p<0.01 for difference between lower limit of normal (LLN) (for selected population) versus fixed ratio; ***: p<0.001 for LLN versus fixed ratio. Howraman Meteran et al. ERJ Open Res 2017;3: ©2017 by European Respiratory Society

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