J-W Koo1, J-P Myong2, H-K Yoon3, C K Rhee4, Y Kim5, J S Kim6, B S Jo7, Y Cho7, J Byun7, M Choi7, H-R Kim1, E-A Kim8. 1. Department of Occupational and Environmental Medicine, Seoul St Mary's Hospital, Catholic University of Korea, Seoul, South Korea; Center for Occupational and Environmental Medicine, Seoul St Mary's Hospital, Catholic University of Korea, Seoul, South Korea. 2. Department of Occupational and Environmental Medicine, Seoul St Mary's Hospital, Catholic University of Korea, Seoul, South Korea<; Center for Occupational and Environmental Medicine, Seoul St Mary's Hospital, Catholic University of Korea, Seoul, South Korea. 3. Department of Internal Medicine, Yeouido St Mary's Hospital, College of Medicine, Catholic University of Korea, Seoul, South Korea. 4. Department of Internal Medicine, Seoul St Mary's Hospital, College of Medicine, Catholic University of Korea, Seoul, South Korea. 5. Department of Internal Medicine, Bucheon St Mary's Hospital, College of Medicine, Catholic University of Korea, Bucheon, South Korea. 6. Department of Internal Medicine, Incheon St Mary's Hospital, College of Medicine, Catholic University of Korea, Incheon, South Korea. 7. Department of Occupational and Environmental Medicine, Seoul St Mary's Hospital, Catholic University of Korea, Seoul, South Korea. 8. Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency, Ulsan, Republic of Korea.
Abstract
SETTING: Multicentred hospital-based cases and control subjects in Korea. OBJECTIVE: To evaluate the association between idiopathic pulmonary fibrosis (IPF) and hazardous materials to which people are occupationally exposed. DESIGN: A multicentre, hospital-based, matched case-control study was performed. The ratio of IPF cases to controls was 1:1 (n = 78 in each group). IPF cases and controls were matched in terms of age group, sex and place of residence. Conditional logistic regression analysis was performed. RESULTS: In simple logistic regression analysis, exposure to metal dust and any exposure for >1 year in an occupational setting were significantly associated with IPF (metal dust OR 4.00, 95%CI 1.34-11.97; any exposure OR 3.67, 95%CI 1.02-13.14). After adjustment for environmental and military exposures and smoking history, the OR for metal dust exposure was 4.97 (95%CI 1.36-18.17) in multiple logistic regression analysis. CONCLUSIONS: Metal dust was associated with incident IPF in Seoul and Gyeonggi Provinces in Korea. This information will be used to support a tailored preventive strategy in specific industries or occupations.
SETTING: Multicentred hospital-based cases and control subjects in Korea. OBJECTIVE: To evaluate the association between idiopathic pulmonary fibrosis (IPF) and hazardous materials to which people are occupationally exposed. DESIGN: A multicentre, hospital-based, matched case-control study was performed. The ratio of IPF cases to controls was 1:1 (n = 78 in each group). IPF cases and controls were matched in terms of age group, sex and place of residence. Conditional logistic regression analysis was performed. RESULTS: In simple logistic regression analysis, exposure to metal dust and any exposure for >1 year in an occupational setting were significantly associated with IPF (metal dust OR 4.00, 95%CI 1.34-11.97; any exposure OR 3.67, 95%CI 1.02-13.14). After adjustment for environmental and military exposures and smoking history, the OR for metal dust exposure was 4.97 (95%CI 1.36-18.17) in multiple logistic regression analysis. CONCLUSIONS:Metal dust was associated with incident IPF in Seoul and Gyeonggi Provinces in Korea. This information will be used to support a tailored preventive strategy in specific industries or occupations.
Authors: Paul D Blanc; Isabella Annesi-Maesano; John R Balmes; Kristin J Cummings; David Fishwick; David Miedinger; Nicola Murgia; Rajen N Naidoo; Carl J Reynolds; Torben Sigsgaard; Kjell Torén; Denis Vinnikov; Carrie A Redlich Journal: Am J Respir Crit Care Med Date: 2019-06-01 Impact factor: 21.405