Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Work life of persons with asthma, rhinitis, and COPD: A study using a national, population-based sample | Journal of Occupational Medicine and Toxicology BioMed Central Research Open Access Work life of persons with asthma rhinitis and COPD A study using a national population-based sample Edward Yelin 1 2 Patricia Katz1 2 John Balmes3 Laura Trupin1 Gillian Earnest3 Mark Eisner3 and Paul Blanc3 4 Address 1Division of Rheumatology Department of Medicine University of California San Francisco San Francisco CA 94143-0920 USA 2Institute for Health Policy Studies University of California San Francisco San Francisco CA 94143-0920 USA 3Division of Occupational and Environmental Medicine Department of Medicine University of California San Francisco San Francisco CA 94143-0924 USA and 4Cardiovascular Research Institute University of California San Francisco San Francisco CA 94143-0924 USA Email Edward Yelin - Patricia Katz - John Balmes - Laura Trupin - Gillian Earnest - Mark Eisner - eisner@ Paul Blanc - blancp@ Corresponding author Published 02 February 2006 Received 17 March 2005 . J -r . n Accepted 02 February 2006 Journal of Occupational Medicine and Toxicology 2006 1 2 doi 86 1745-6673-1-2 This article is available from http content 1 1 2 2006 Yelin et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Objective To estimate the duration of work life among persons reporting a physician s diagnosis of COPD asthma or rhinitis compared to those with select non-respiratory conditions or none and to delineate the factors associated with continuance of employment. Methods Persons ages 55 to 75 reporting a physician s diagnosis of COPD asthma or rhinitis as well as those .
