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Hemoglobin and mortality in patients with COPD: a nationwide population-based cohort study

 Seon Cheol Park  ;  Young Sam Kim  ;  Young Ae Kang  ;  Eun Cheol Park  ;  Cheung Soo Shin  ;  Dong Wook Kim  ;  Chin Kook Rhee 
 International Journal of Chronic Obstructive Pulmonary Disease, Vol.13 : 1599-1605, 2018 
Journal Title
 International Journal of Chronic Obstructive Pulmonary Disease 
Issue Date
COPD ; anemia ; hemoglobin ; mortality
Purpose: Previous studies have reported that anemia increased mortality in patients with COPD. However, it is unclear whether anemia is associated with increased COPD mortality in the general population. The purpose of our study is to identify whether anemia is related to long-term mortality in COPD using a large population-based database. Patients and methods: Using the National Health Insurance Service-Health Screening Cohort, we identified COPD patients with available hemoglobin level. We analyzed mortality among patients with COPD from 2003 to 2013 according to hemoglobin level. Results: A total of 7,114 patients with COPD were identified. Mean age was 65.0+/-9.3 years, and 62.9% were male. Anemia was present in 469 patients (6.6%). The overall mortality rate was 46.5% in anemia and 32.1% in non-anemia groups (p<0.001). The hazard ratio of anemia for mortality was 1.31 (95% CI, 1.11-1.54). Among patients with anemia, the hemoglobin level correlated well with mortality. Conclusion: Anemia was associated with increased long-term mortality of COPD, and even mild anemia was related to a significantly increased risk.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Preventive Medicine and Public Health (예방의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Anesthesiology and Pain Medicine (마취통증의학교실) > 1. Journal Papers
Yonsei Authors
Kang, Young Ae(강영애) ORCID logo https://orcid.org/0000-0002-7783-5271
Kim, Young Sam(김영삼) ORCID logo https://orcid.org/0000-0001-9656-8482
Park, Eun-Cheol(박은철) ORCID logo https://orcid.org/0000-0002-2306-5398
Shin, Cheung Soo(신증수) ORCID logo https://orcid.org/0000-0001-7829-8458
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