{"id":6477,"date":"2016-11-14T00:00:00","date_gmt":"2016-11-14T05:00:00","guid":{"rendered":"https:\/\/icesontario.wpengine.com\/journal-articles\/outcomes-of-patients-with-chronic-obstructive-pulmonary-disease-diagnosed-with-or-without-pulmonary-function-testing\/"},"modified":"2023-06-14T19:33:33","modified_gmt":"2023-06-14T23:33:33","slug":"outcomes-of-patients-with-chronic-obstructive-pulmonary-disease-diagnosed-with-or-without-pulmonary-function-testing","status":"publish","type":"journal_article","link":"https:\/\/www.ices.on.ca\/fr\/publications\/journal-articles\/outcomes-of-patients-with-chronic-obstructive-pulmonary-disease-diagnosed-with-or-without-pulmonary-function-testing\/","title":{"rendered":"Outcomes of patients with chronic obstructive pulmonary disease diagnosed with or without pulmonary function testing"},"content":{"rendered":"<p><strong>Background<\/strong> &#x2014; A small number of people with chronic obstructive pulmonary disease (COPD) receive pulmonary function testing around the time of diagnosis. Because omitting testing increases misdiagnosis, we sought to determine whether health outcomes differed between patients whose COPD was diagnosed with or without pulmonary function testing. <\/p>\n<p><strong>Methods<\/strong> &#x2014; We conducted a longitudinal population study of patients with physician- diagnosed COPD from 2005 to 2012 using health administrative data from Ontario, Canada. We assessed whether having pulmonary function testing around the time of diagnosis was associated with the composite outcome of admission to hospital for COPD or all-cause death, using adjusted survival analysis. <\/p>\n<p><strong>Results<\/strong> &#x2014; Chronic obstructive pulmonary disease was diagnosed in 68 898 patients during the study period; 41.2% of patients received peridiagnostic pulmonary function testing. In adjusted analysis, patients who underwent testing were less likely to die or be admitted to hospital for COPD (adjusted hazard ratio [HR] 0.91, 95% confidence interval [CI] 0.89&#x2013; 0.94) and were more likely to be prescribed an inhaled long-acting bronchodilator than patients who did not undergo testing. Subgroup analysis suggested that the association of testing and outcomes was confined to patients with COPD diagnosed in the ambulatory care setting (adjusted HR 0.80, 95% CI 0.76&#x2013;0.84). <\/p>\n<p><strong>Interpretation<\/strong> &#x2014; Confirmation of a COPD diagnosis using pulmonary function testing is associated with a decreased risk of death and admission to hospital for COPD. In ambulatory patients, this effect may be from increased use of appropriate COPD medications. The findings of this study validate current guideline recommendations that encourage pulmonary function testing for diagnosis in all patients with suspected COPD.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Background &#x2014; A small number of people with chronic obstructive pulmonary disease (COPD) receive pulmonary function testing around the time of diagnosis. Because omitting testing increases misdiagnosis, we sought to determine whether health outcomes differed between patients whose COPD was diagnosed with or without pulmonary function testing. Methods &#x2014; We conducted a longitudinal population study [&hellip;]<\/p>\n","protected":false},"template":"","migration-helper-automated":[],"migration-manual":[],"topic":[62,52,35],"migration-helper-qa-sample-set":[],"class_list":["post-6477","journal_article","type-journal_article","status-publish","hentry","topic-health-services-research","topic-lung-health","topic-public-health"],"acf":{"citation":"Gershon A, Mecredy G, Croxford R, To T, Stanbrook MB, Aaron SD; Canadian Respiratory Research Network. <em>CMAJ<\/em>. 2017; 189(14):E530-8. Epub 2016 Nov 14.","source_url":"http:\/\/www.cmaj.ca\/content\/189\/14\/E530.full","ices_scientist":[1244,1111,1349,1309],"site":[6733,6735],"research_program":[6746],"news_release":[7676],"journal_article":[],"atlas":[],"research_report":[],"infographic":[],"video":[],"downloads":null,"links":null,"sitecore_item_id":"FC6486E2-7DAB-4564-B41A-468B3CF1F5ED","sitecore_item_name":"Outcomes-of-patients-with-chronic-obstructive-pulmonary-disease-diagnosed-with-or-without-pulmonary","sitecore_field_values":"{\n  \"__Valid from\": \"20161208T134200\",\n  \"Title\": \"Outcomes of patients with chronic obstructive pulmonary disease diagnosed with or without pulmonary function testing\",\n  \"Summary\": \"Confirmation of a COPD diagnosis using pulmonary function testing is associated with a decreased risk of death and admission to hospital for COPD.\",\n  \"Citation\": \"<p>Gershon A, Mecredy G, Croxford R, To T, Stanbrook MB, Aaron SD; Canadian Respiratory Research Network. <em>CMAJ<\/em>. 2017; 189(14):E530-8. Epub 2016 Nov 14.<\/p>\",\n  \"Abstract\": \"<p><strong>Background<\/strong> &mdash; A small number of people with chronic obstructive pulmonary disease (COPD) receive pulmonary function testing around the time of diagnosis. Because omitting testing increases misdiagnosis, we sought to determine whether health outcomes differed between patients whose COPD was diagnosed with or without pulmonary function testing. <\/p>n<p><strong>Methods<\/strong> &mdash; We conducted a longitudinal population study of patients with physician- diagnosed COPD from 2005 to 2012 using health administrative data from Ontario, Canada. We assessed whether having pulmonary function testing around the time of diagnosis was associated with the composite outcome of admission to hospital for COPD or all-cause death, using adjusted survival analysis. <\/p>n<p><strong>Results<\/strong> &mdash; Chronic obstructive pulmonary disease was diagnosed in 68 898 patients during the study period; 41.2% of patients received peridiagnostic pulmonary function testing. In adjusted analysis, patients who underwent testing were less likely to die or be admitted to hospital for COPD (adjusted hazard ratio [HR] 0.91, 95% confidence interval [CI] 0.89&ndash; 0.94) and were more likely to be prescribed an inhaled long-acting bronchodilator than patients who did not undergo testing. Subgroup analysis suggested that the association of testing and outcomes was confined to patients with COPD diagnosed in the ambulatory care setting (adjusted HR 0.80, 95% CI 0.76&ndash;0.84). <\/p>n<p><strong>Interpretation<\/strong> &mdash; Confirmation of a COPD diagnosis using pulmonary function testing is associated with a decreased risk of death and admission to hospital for COPD. In ambulatory patients, this effect may be from increased use of appropriate COPD medications. The findings of this study validate current guideline recommendations that encourage pulmonary function testing for diagnosis in all patients with suspected COPD.<\/p>n<p><a href=\"http:\/\/www.cmaj.ca\/content\/189\/14\/E530.full\" title=\"Opens full text in external link\">View full text<\/a><\/p>\",\n  \"Keywords\": \"{6CF3F7C3-716A-435F-BFC9-A17A5FE763F9}|{D41CE091-DCDC-475E-9E15-4BC16AEE1D81}|{A39C5396-16B7-4369-B0F9-31F6E91E46FC}\",\n  \"Related Products\": \"<h2>News release<\/h2>rn<h3><a href=\"~\/link.aspx?_id=DE57538E1A3B4D5A8156FA469E482E1D&amp;_z=z\">Using lung function tests to diagnose COPD can help patients and reduce healthcare costs<\/a><\/h3>rn<h2>IN THE NEWS<\/h2>rn<h3><a href=\"https:\/\/copdnewstoday.com\/news-posts\/2016\/11\/17\/copd-diagnosis-lung-function-test-linked-decreased-mortality-fewer-hospital-admissions\/\" title=\"COPD News Today\" target=\"_blank\">COPD diagnosis with lung function test linked to decreased mortality, fewer hospital admissions <\/a><\/h3>\",\n  \"Research Programs\": \"{CFE36C89-C969-4C23-B5E4-1BA9E5BDC273}\",\n  \"ICES Locations\": \"{4FCAABBA-14A5-42E6-8F33-BC6C2F1D9908}|{FBE2D1B1-C0BA-423F-8D16-39466B6C1424}\",\n  \"ICES Scientists\": \"{BC74234B-58F2-4366-95D9-235FF40A7AE3}|{198CB764-0CEA-499E-A508-1CAAAD283C90}|{73142C55-DCAD-42CC-92F6-A9E364B0EF62}|{EA4DEC64-AACD-488F-8BC7-4D9A8CBAF75C}\",\n  \"Posted Date\": \"20161114T123000\",\n  \"Show on Publications Landing Page\": \"1\"\n}","previous_url":"https:\/\/www.ices.on.ca\/Publications\/Journal-Articles\/2016\/January\/Outcomes-of-patients-with-chronic-obstructive-pulmonary-disease-diagnosed-with-or-without-pulmonary"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ICES | Outcomes of patients with chronic obstructive pulmonary disease diagnosed with or without pulmonary function testing<\/title>\n<meta name=\"description\" content=\"Background &#x2014; A small number of people with chronic obstructive pulmonary disease (COPD) receive pulmonary function testing around the time of\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ices.on.ca\/fr\/publications\/journal-articles\/outcomes-of-patients-with-chronic-obstructive-pulmonary-disease-diagnosed-with-or-without-pulmonary-function-testing\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ICES | Outcomes of patients with chronic obstructive pulmonary disease diagnosed with or without pulmonary function testing\" \/>\n<meta property=\"og:description\" content=\"Background &#x2014; A small number of people with chronic obstructive pulmonary disease (COPD) receive pulmonary function testing around the time of\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ices.on.ca\/fr\/publications\/journal-articles\/outcomes-of-patients-with-chronic-obstructive-pulmonary-disease-diagnosed-with-or-without-pulmonary-function-testing\/\" \/>\n<meta property=\"og:site_name\" content=\"ICES\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/ICESOntario\/\" \/>\n<meta property=\"article:modified_time\" content=\"2023-06-14T23:33:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ices.on.ca\/wp-content\/uploads\/2024\/11\/ic-es-data-discovery-better-health-logo.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/publications\\\/journal-articles\\\/outcomes-of-patients-with-chronic-obstructive-pulmonary-disease-diagnosed-with-or-without-pulmonary-function-testing\\\/\",\"url\":\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/publications\\\/journal-articles\\\/outcomes-of-patients-with-chronic-obstructive-pulmonary-disease-diagnosed-with-or-without-pulmonary-function-testing\\\/\",\"name\":\"ICES | Outcomes of patients with chronic obstructive pulmonary disease diagnosed with or without pulmonary function testing\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.ices.on.ca\\\/fr\\\/#website\"},\"datePublished\":\"2016-11-14T05:00:00+00:00\",\"dateModified\":\"2023-06-14T23:33:33+00:00\",\"description\":\"Background &#x2014; 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