{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T02:51:51Z","timestamp":1790477511663,"version":"4.1.0"},"reference-count":30,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2023,7,28]],"date-time":"2023-07-28T00:00:00Z","timestamp":1690502400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000292","name":"Cystic Fibrosis Trust","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000292","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000082","name":"Cystic Fibrosis Canada","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000082","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Pediatric Pulmonology"],"published-print":{"date-parts":[[2023,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Handheld spirometry allows monitoring of lung function at home, of particular importance during the COVID\u201019 pandemic. Pediatric studies are unclear on whether values are interchangeable with traditional, clinic\u2010based spirometry. We aimed to assess differences between contemporaneous, home (unsupervised) and clinic (supervised) spirometry and the variability of the former. The accuracy of the commercially available spirometer used in the study was also tested.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Data from participants in the Clinical Monitoring and Biomarkers to stratify severity and predict outcomes in children with cystic fibrosisc (CLIMB\u2010CF) Study aged \u2265 6 years who had paired (\u00b11 day) clinic and home forced expiratory volume in 1\u2009s (FEV<jats:sub>1<\/jats:sub>) readings were analyzed. Variability during clinical stability over 6\u2010months was assessed. Four devices from Vitalograph were tested using 1\u00a0and 3\u2009L calibration syringes.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Sixty\u2010seven\u00a0participants (median [interquartile range] age 10.7 [7.6\u221213.9] years) provided home and clinic FEV<jats:sub>1<\/jats:sub> data pairs. The mean (SD) FEV<jats:sub>1<\/jats:sub>% bias was 6.5% [\u00b18.2%]) with wide limits of agreement (\u22129.6% to +22.7%); 76.2% of participants recorded lower results at home. Coefficient of variation of home FEV<jats:sub>1<\/jats:sub>% during stable periods was 9.9%. Data from the testing of the handheld device used in CLIMB\u2010CF showed a potential underread.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>In children and adolescents, home spirometry using hand\u2010held equipment cannot be used interchangeably with clinic spirometry. Home spirometry is moderately variable during clinical stability. New handheld devices underread, particularly at lower volumes of potential clinical significance for smaller patients; this suggests that supervision does not account fully for the discrepancy. Opportunities should be taken to obtain dual device measurements in clinic, so that trend data from home can be utilized more accurately.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ppul.26602","type":"journal-article","created":{"date-parts":[[2023,7,28]],"date-time":"2023-07-28T11:34:09Z","timestamp":1690544049000},"page":"2871-2880","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["Unsupervised home spirometry is not equivalent to supervised clinic spirometry in children and young people with cystic fibrosis: Results from the CLIMB\u2010CF study"],"prefix":"10.1002","volume":"58","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4170-2327","authenticated-orcid":false,"given":"Claire","family":"Edmondson","sequence":"first","affiliation":[{"name":"NHLI, Imperial College London UK"},{"name":"Royal Brompton Hospital Part of Guy's &amp; St Thomas' NHS Trust London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicole","family":"Westrupp","sequence":"additional","affiliation":[{"name":"NHLI, Imperial College London UK"},{"name":"Royal Brompton Hospital Part of Guy's &amp; 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