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  • Title: Association between all-cause and cause-specific mortality and the GOLD stages 1-4: A 30-year follow-up among Finnish adults.
    Author: Mattila T, Vasankari T, Kanervisto M, Laitinen T, Impivaara O, Rissanen H, Knekt P, Jousilahti P, Saarelainen S, Puukka P, Heliövaara M.
    Journal: Respir Med; 2015 Aug; 109(8):1012-8. PubMed ID: 26108990.
    Abstract:
    BACKGROUND: Mortality correlates with the Global Initiative for Chronic Obstructive Lung Disease (GOLD) criteria of airway obstruction. Yet, little data exist concerning the long-term survival of patients presenting with different levels of obstruction. METHODS: We studied the association between all-cause and cause-specific mortality and GOLD stages 1-4 in a 30-year follow-up among 6636 Finnish men and women aged 30 or older participating in the Mini-Finland Health Study between 1978 and 1980. RESULTS: After adjusting for age, sex, and smoking history, the GOLD stage of the subject showed a strong direct relationship with all-cause mortality, mortality from cardiovascular and respiratory diseases, and cancer. The adjusted hazard ratios of death were 1.27 (95% confidence interval (CI) 1.06-1.51), 1.40 (1.21-1.63), 1.55 (1.21-1.97) and 2.85 (1.65-4.94) for GOLD stages 1-4, respectively, with FEV1/FVC ≥70% as the reference. The association between GOLD stages 2-4 and mortality was strongest among subjects under 50 years of age at the baseline measurement. Cardiovascular mortality increased consistently for all GOLD stages. CONCLUSIONS: Airway obstruction indicates an increased risk for all-cause mortality according to the severity of the GOLD stage. We found that even stage 1 carries a risk for cardiovascular death independently of smoking history and other known risk factors.
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