Reply to: Sputum colour matters: haemoptysis in a bronchiectasis registry

<title>Extract</title> We thank S. Yamamoto and co-workers for their letter, in which they argue that sputum colour assessment and sputum characterisation should include assessment of haemoptysis. Our study showed that the use of a four-point sputum colour chart to assess patients in stable state, which has been validated in bronchiectasis, could predict clinically relevant outcomes such as exacerbations and severe exacerbations [1].