Screening for Chronic Obstructive Pulmonary Disease: Validity and Reliability of a Portable Device in Non-Specialized Healthcare Settings |
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Authors: | Cristina Represas-Represas Alberto Fernández-Villar Alberto Ruano-Ravi?a Ana Priegue-Carrera Maribel Botana-Rial study group of “Validity of COPD- in non-specialized healthcare settings” |
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Institution: | 1. Pulmonology Department, NeumoVigoI+i Research Group, University Hospital Complex of Vigo (CHUVI), Estructura Organizativa de Xestión Integrada de Vigo (EOXI Vigo), BiomedicalResearchInstitute of Vigo (IBIV), Vigo, Spain;2. Department of Preventive Medicine and PublicHealth, University of Santiago de Compostela, Santiago de Compostela, Spain, CIBER de Epidemiología y Salud Pública, CIBERESP, Madrid, Spain;Lee Kong Chian School of Medicine, SINGAPORE |
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Abstract: | Introduction and ObjectivesThe underdiagnosis of chronic obstructive pulmonary disease (COPD) could be improved through screening using portable devices simpler than conventional spirometers in specific healthcare settings to reach a higher percentage of the at-risk population. This study was designed to assess the validity and reliability of the COPD-6 portable device to screen for COPD in non-specialized healthcare settings.MethodsProspective cohort study to validate a diagnostic test. Three cohorts were recruited: primary care (PC), emergency services (ES) and community pharmacies (CPh). Study population: individuals with risk factors for COPD (>40 years, smoking >10 pack-years, with respiratory symptoms). The values measured using the COPD-6 were FEV1, FEV6 and the FEV1/FEV6 ratio. Subsequently, participants underwent conventional spirometry at hospital, using a post-bronchodilator FEV1/FVC value <0.7 as the gold standard criterion for the COPD diagnosis.Results437 participants were included, 362 were valid for the analysis. COPD was diagnosed in 114 patients (31.5%). The area under the ROC curve for the COPD-6 for COPD screening was 0.8.The best cut-off point for the FEV1/FEV6 ratio was 0.8 (sensitivity, 92.1%) using spirometry with the bronchodilator test as the gold standard. There were practically no differences in the COPD-6 performancein the different settings and also regarding age, gender and smoking status.ConclusionsThe COPD-6 device is a valid tool for COPD screening in non-specialized healthcare settings. In this context, the best cut-off point for the FEV1/FEV6 ratio is 0.8. |
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