TY - JOUR AU - Ekberg-Aronsson, Marie AU - Pehrsson, Kerstin AU - Nilsson, Jan-Åke AU - Nilsson, Peter M. AU - Löfdahl, Claes-Göran PY - 2005 DA - 2005/08/25 TI - Mortality in GOLD stages of COPD and its dependence on symptoms of chronic bronchitis JO - Respiratory Research SP - 98 VL - 6 IS - 1 AB - The GOLD classification of COPD severity introduces a stage 0 (at risk) comprising individuals with productive cough and normal lung function. The aims of this study were to investigate total mortality risks in GOLD stages 0–4 with special focus on stage 0, and furthermore to assess the influence of symptoms of chronic bronchitis on mortality risks in GOLD stages 1–4. SN - 1465-993X UR - https://doi.org/10.1186/1465-9921-6-98 DO - 10.1186/1465-9921-6-98 ID - Ekberg-Aronsson2005 ER -