'...a wide-ranging, scholarly and humane book which should be read by anyone seriously interested in this country.' - David Donnison From the devastation of the Korean war, there emerged one of the most dynamic, rapidly growing economies the world has ever seen. Starting from a concern about the housing of people struggling to survive on low incomes in the cities of South Korea, Kim Woo-Jin throws light upon the whole development of Korean society since the civil war. He argues that housing has played a central part in both the development of the economy and its more recent slowdown. In the future, housing policies may play their part in resisting the destructive forces that the probable reunification of North and South will bring and recreate hope for the future.
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Woo Jin Kim,1 Jae-Joon Yim,2 Deog Kyeom Kim,3 Myung Goo Lee,4 Anne L Fuhlbrigge,5 Pawel Sliwinski,6 Iwona Hawrylkiewicz,6 Emily S Wan,7,8 Michael H Cho,7,8 Edwin K Silverman7,8 1Department of Internal Medicine and Environmental Health Center, Kangwon National University Hospital, Chuncheon, 2Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, Seoul National University College of Medicine, Seoul, 3Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, 4Division of Pulmonary, Allergy and Critical Care Medicine, Hallym University Chuncheon Sacred Heart Hospital, Chuncheon, Korea; 5Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado School of Medicine, Aurora, CO, USA; 62nd Department of Respiratory Medicine, Institute of Tuberculosis and Lung Diseases, Warsaw, Poland; 7Channing Division of Network Medicine, 8Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, MA, USA Purpose: Chronic obstructive pulmonary disease (COPD), characterized by irreversible airflow obstruction, is a major cause of morbidity and mortality worldwide. However, geographic differences in the clinical characteristics of severe COPD patients have not been widely studied. Methods: We recruited a total of 828 severe COPD cases from three continents. Subjects in Poland were enrolled by the Institute of Tuberculosis and Lung Diseases in Warsaw; subjects in Korea participated at several university hospitals in Korea; and subjects in USA were enrolled at two clinics affiliated with academic medical centers. All subjects were over the age of 30 with at least 10 pack-years of cigarette smoking history. Cases manifested severe to very severe airflow obstruction with post-bronchodilator forced expiratory volume in 1 second (FEV1) <50% predicted and FEV1/forced vital capacity <0.7. All subjects completed a detailed questionnaire and underwent standardized pre-bronchodilator and post-bronchodilator spirometry. Subjects with known tuberculosis (TB)-associated lung parenchymal destruction were excluded. Univariate and multivariate assessments of the impact of the country of origin on respiratory symptoms and respiratory illness were performed. Results: In both univariate and multivariate analyses, a history of TB (38.7%) and physician-diagnosed asthma (43.9%) were significantly more common in subjects with severe COPD from Korea than USA or Poland, while attacks of bronchitis (64.2%) were more common in subjects with severe COPD from Poland. COPD subjects from Poland had more severe dyspnea (modified Medical Research Council 3.3±1.0) and more frequently reported symptoms of chronic bronchitis (52.2%). A history of TB was also more common in Poland (10.8%) than in USA (0.3%) severe COPD patients. Conclusion: Respiratory symptoms and other respiratory illnesses associated with severe COPD differed widely among three continents. Keywords: COPD, epidemiology, respiratory symptoms, tuberculosis
Yeon-Mok Oh,1,* Keu Sung Lee,2,* Yoonki Hong,3,* Sung Chul Hwang,2 Jae Yeol Kim,4 Deog Keom Kim,5 Kwang Ha Yoo,6 Ji-Hyun Lee,7 Tae-Hyung Kim,8 Seong Yong Lim,9 Chin Kook Rhee,10 Hyoung Kyu Yoon,11 Sang Yeub Lee,12 Yong Bum Park,13 Jin Hee Jung,14 Woo Jin Kim,3 Sang-Do Lee,1 Joo Hun Park2 1Department of Pulmonary and Critical Care Medicine and Clinical Research Center for Chronic Obstructive Airway Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; 2Department of Pulmonary and Critical Care Medicine, Ajou University School of Medicine, Suwon, Korea; 3Department of Internal Medicine and Environmental Health Center, Kangwon National University, Kangwon National University Hospital, Chuncheon, Korea; 4Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea; 5Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea; 6Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea; 7Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Korea; 8Division of Pulmonology, Department of Internal Medicine, Hanyang University College of Medicine, Guri, Korea; 9Division of Pulmonary and Critical Care Medicine, Department of Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea; 10Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St Mary's Hospital, Catholic University of Korea, Seoul, Korea; 11Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, College of Medicine, Korea University Anam Hospital, Seoul, Korea; 12Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, College of Medicine, Korea University Anam Hospital, Seoul, Korea; 13Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Kangdong Sacred Heart Hospital, Seoul, Korea; 14Department of Biomedical Informatics, Ajou University School of Medicine, Suwon, Korea *These authors contributed equally to this work Background: High blood eosinophil count is a predictive biomarker for response to inhaled corticosteroids in prevention of acute exacerbation of COPD, and low blood eosinophil count is associated with pneumonia risk in COPD patients taking inhaled corticosteroids. However, the prognostic role of blood eosinophil count remains underexplored. Therefore, we investigated the associated factors and mortality based on blood eosinophil count in COPD.Methods: Patients with COPD were recruited from 16 hospitals of the Korean Obstructive Lung Disease cohort (n=395) and COPD in Dusty Area cohort (n=234) of Kangwon University Hospital. The two merged cohorts were divided based on blood eosinophil count into three groups: high (≥5%), middle (2%–5%), and low (<2%).Results: The high group had longer six-minute walk distance (high =445.8±81.4, middle =428.5±88.0, and low =414.7±86.3 m), higher body mass index (23.3±3.1, 23.1±3.1, and 22.5±3.2 kg/m2), lower emphysema index (18.5±14.1, 22.2±15.3, and 23.7±16.3), and higher inspiratory capacity/total lung capacity ratio (32.6±7.4, 32.4±9.2, and 29.9% ± 8.9%) (P<0.05). The survival period increased with increasing blood eosinophil count (high =9.52±0.23, middle =8.47±1.94, and low =7.42±0.27 years, P<0.05). Multivariate linear regression analysis revealed that the emphysema index was independently and negatively correlated with blood eosinophil count (P<0.05).Conclusion: In COPD, the severity of emphysema was independently linked with low blood eosinophil count and the longer survival period was associated with increased blood eosinophil count, though it was not proven in the multivariate analysis. Keywords: blood eosinophil, COPD, biomarker