{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,5]],"date-time":"2026-02-05T07:54:51Z","timestamp":1770278091322,"version":"3.49.0"},"reference-count":37,"publisher":"Public Library of Science (PLoS)","issue":"2","license":[{"start":{"date-parts":[[2022,2,8]],"date-time":"2022-02-08T00:00:00Z","timestamp":1644278400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100010009","name":"Edge Hill University","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100010009","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"<jats:sec id=\"sec001\"><jats:title>Background<\/jats:title><jats:p>Bronchiectasis is a chronic respiratory disease characterised by airways widening and recurrent infections, resulting in episodes of chronic cough, sputum expectoration, and dyspnoea. This leads to deterioration in daily function, repeated hospital admissions and poor quality of life. The prevalence and mortality related to bronchiectasis is increasing worldwide with growing economic burden on healthcare systems. Physiotherapy for bronchiectasis aims to decrease accumulation of sputum, dyspnoea, and improve exercise capacity and daily function. A robust evidence base to support physiotherapy in bronchiectasis is currently lacking. This is partly because of inconsistency and poor reporting of outcomes in available studies.<\/jats:p><jats:p>A core outcome set is the minimum acceptable group of outcomes that should be used in clinical trials for a specific condition. This decreases research waste by improving consistency and reporting of key outcomes and facilitates the synthesis of study outcomes in systematic reviews and guidelines.<\/jats:p><jats:p>The aim of the study is therefore to develop a core outcome set and outcome measurement set for physiotherapy research in adults with bronchiectasis. This will ensure outcomes important to key stakeholders are consistently used and reported in future research.<\/jats:p><\/jats:sec><jats:sec id=\"sec002\"><jats:title>Methods and analysis<\/jats:title><jats:p>This project will use the COMET Initiative and COSMIN guidelines of core outcome set development and will include three phases. In the first phase, a comprehensive list of outcomes will be developed using systematic review of reported outcomes and qualitative interviews with patients and physiotherapists. Then consensus on key outcomes will be established in phase two using a Delphi survey and a consensus meeting. Finally, in phase three, we will identify appropriate instruments to measure the core outcomes by evaluating the psychometric properties of available instruments and a stakeholders\u2019 meeting to establish consensus.<\/jats:p><\/jats:sec><jats:sec id=\"sec003\"><jats:title>Ethics<\/jats:title><jats:p>The study was reviewed and has received ethical approval from the health-related Research Ethics Committee- Edge Hill University (ETH2021-0217).<\/jats:p><\/jats:sec><jats:sec id=\"sec004\"><jats:title>Registration<\/jats:title><jats:p>This study is registered with the COMET database.<jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"https:\/\/www.comet-initiative.org\/Studies\/Details\/1931\" xlink:type=\"simple\">https:\/\/www.comet-initiative.org\/Studies\/Details\/1931<\/jats:ext-link>.<\/jats:p><jats:p>The full systematic review protocol is registered in PROSPERO under the number<jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"https:\/\/www.crd.york.ac.uk\/prospero\/display_record.php?RecordID=266247\" xlink:type=\"simple\">CRD42021266247<\/jats:ext-link>.<\/jats:p><\/jats:sec>","DOI":"10.1371\/journal.pone.0263695","type":"journal-article","created":{"date-parts":[[2022,2,8]],"date-time":"2022-02-08T18:26:01Z","timestamp":1644344761000},"page":"e0263695","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":10,"title":["Development of a core outcome set and outcome measurement set for physiotherapy trials in adults with Bronchiectasis (COS-PHyBE study): A 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