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      International Journal of COPD (submit here)

      This international, peer-reviewed Open Access journal by Dove Medical Press focuses on pathophysiological processes underlying Chronic Obstructive Pulmonary Disease (COPD) interventions, patient focused education, and self-management protocols. Sign up for email alerts here.

      39,063 Monthly downloads/views I 2.893 Impact Factor I 5.2 CiteScore I 1.16 Source Normalized Impact per Paper (SNIP) I 0.804 Scimago Journal & Country Rank (SJR)

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      Misidentification of airflow obstruction: prevalence and clinical significance in an epidemiological study.

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          Abstract

          The fixed threshold criterion for the ratio of forced expiratory volume in the first second to forced vital capacity (FEV1/FVC) <0.7 is widely applied for diagnosis of airflow obstruction (AO). However, this fixed threshold criterion may misidentify AO, because thresholds below the fifth percentile of normal FEV1/FVC (lower limit of normal; LLN) vary with age. This study aims to identify the prevalence of AO misidentification and its clinical significance.

          Most cited references18

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          Standards for the diagnosis and treatment of patients with COPD: a summary of the ATS/ERS position paper.

          W MacNee, , B Celli (2004)
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            International Study of Asthma and Allergies in Childhood (ISAAC): rationale and methods.

            Richard Beasley, Melissa L. Anderson, Linda Asher … (1995)
            The aetiology of asthma and allergic disease remains poorly understood, despite considerable research. The International Study of Asthma and Allergies in Childhood (ISAAC), was founded to maximize the value of epidemiological research into asthma and allergic disease, by establishing a standardized methodology and facilitating international collaboration. Its specific aims are: 1) to describe the prevalence and severity of asthma, rhinitis and eczema in children living in different centres, and to make comparisons within and between countries; 2) to obtain baseline measures for assessment of future trends in the prevalence and severity of these diseases; and 3) to provide a framework for further aetiological research into genetic, lifestyle, environmental, and medical care factors affecting these diseases. The ISAAC design comprises three phases. Phase 1 uses core questionnaires designed to assess the prevalence and severity of asthma and allergic disease in defined populations. Phase 2 will investigate possible aetiological factors, particularly those suggested by the findings of Phase 1. Phase 3 will be a repetition of Phase 1 to assess trends in prevalence.
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              Sampling Techniques

              WG Cochran, W. Cochran, W., Cochran … (1963)
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                Author and article information

                Journal
                Journal ID (iso-abbrev): Int J Chron Obstruct Pulmon Dis
                Title: International journal of chronic obstructive pulmonary disease
                Publisher: Informa UK Limited
                ISSN (Electronic): 1178-2005
                ISSN (Print): 1176-9106
                Publication date (Electronic): 2015
                Volume: 10
                Affiliations
                [1 ] Division of Pulmonary, Critical Care and Allergy, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
                Article
                Publisher Item ID: copd-10-535
                DOI: 10.2147/COPD.S80765
                PMC ID: 4362652
                PubMed ID: 25792821
                SO-VID: bd7d9557-a681-4d59-a0ef-470194b48f76
                History

                Keywords: airflow obstruction,asthma,chronic obstructive pulmonary disease,spirometry
                Data availability:
                Keywords: airflow obstruction, asthma, chronic obstructive pulmonary disease, spirometry

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