{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,5]],"date-time":"2026-02-05T11:26:09Z","timestamp":1770290769295,"version":"3.49.0"},"reference-count":37,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2021,12,3]],"date-time":"2021-12-03T00:00:00Z","timestamp":1638489600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Obstructive sleep apnoea (OSA) is a global health concern, and polysomnography (PSG) is the gold standard for assessing OSA severity. However, the sleep parameters of home-based and in-laboratory PSG vary because of environmental factors, and the magnitude of these discrepancies remains unclear. We enrolled 125 Taiwanese patients who underwent PSG while wearing a single-lead electrocardiogram patch (RootiRx). After the PSG, all participants were instructed to continue wearing the RootiRx over three subsequent nights. Scores on OSA indices\u2014namely, the apnoea\u2013hypopnea index, chest effort index (CEI), cyclic variation of heart rate index (CVHRI), and combined CVHRI and CEI (Rx index), were determined. The patients were divided into three groups based on PSG-determined OSA severity. The variables (various severity groups and environmental measurements) were subjected to mean comparisons, and their correlations were examined by Pearson\u2019s correlation coefficient. The hospital-based CVHRI, CEI, and Rx index differed significantly among the severity groups. All three groups exhibited a significantly lower percentage of supine sleep time in the home-based assessment, compared with the hospital-based assessment. The percentage of supine sleep time (\u2206Supine%) exhibited a significant but weak to moderate positive correlation with each of the OSA indices. A significant but weak-to-moderate correlation between the \u2206Supine% and \u2206Rx index was still observed among the patients with high sleep efficiency (\u226580%), who could reduce the effect of short sleep duration, leading to underestimation of the patients\u2019 OSA severity. The high supine percentage of sleep may cause OSA indices\u2019 overestimation in the hospital-based examination. Sleep recording at home with patch-type wearable devices may aid in accurate OSA diagnosis.<\/jats:p>","DOI":"10.3390\/s21238097","type":"journal-article","created":{"date-parts":[[2021,12,6]],"date-time":"2021-12-06T03:10:38Z","timestamp":1638760238000},"page":"8097","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Comparison of Hospital-Based and Home-Based Obstructive Sleep Apnoea Severity Measurements with a Single-Lead Electrocardiogram Patch"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1281-8718","authenticated-orcid":false,"given":"Wen-Te","family":"Liu","sequence":"first","affiliation":[{"name":"School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan"},{"name":"Sleep Center, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235041, Taiwan"},{"name":"Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235041, Taiwan"}]},{"given":"Shang-Yang","family":"Lin","sequence":"additional","affiliation":[{"name":"School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan"},{"name":"Sleep Center, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235041, Taiwan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1639-4257","authenticated-orcid":false,"given":"Cheng-Yu","family":"Tsai","sequence":"additional","affiliation":[{"name":"Department of Civil and Environmental Engineering, Imperial College London, London SW7 2AZ, UK"}]},{"given":"Yi-Shin","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan"}]},{"given":"Wen-Hua","family":"Hsu","sequence":"additional","affiliation":[{"name":"Master Program, Thoracic Medicine School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan"}]},{"given":"Arnab","family":"Majumdar","sequence":"additional","affiliation":[{"name":"Department of Civil and Environmental Engineering, Imperial College London, London SW7 2AZ, UK"}]},{"given":"Chia-Mo","family":"Lin","sequence":"additional","affiliation":[{"name":"Sleep Center, Shin Kong Wu Ho-Su Memorial Hospital, Taipei 111045, Taiwan"}]},{"given":"Kang-Yun","family":"Lee","sequence":"additional","affiliation":[{"name":"Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235041, Taiwan"},{"name":"Division of Pulmonary Medicine, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0147-1640","authenticated-orcid":false,"given":"Dean","family":"Wu","sequence":"additional","affiliation":[{"name":"Sleep Center, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235041, Taiwan"},{"name":"Department of Neurology, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235041, Taiwan"},{"name":"Department of Neurology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan"},{"name":"Taipei Neuroscience Institute, Taipei Medical University, Taipei 110301, Taiwan"},{"name":"Dementia Center, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235041, Taiwan"}]},{"given":"Yi-Chun","family":"Kuan","sequence":"additional","affiliation":[{"name":"Sleep Center, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235041, Taiwan"},{"name":"Department of Neurology, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235041, Taiwan"},{"name":"Department of Neurology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan"},{"name":"Taipei Neuroscience Institute, Taipei Medical University, Taipei 110301, Taiwan"},{"name":"Dementia Center, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235041, Taiwan"}]},{"given":"Hsin-Chien","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Psychiatry, Taipei Medical University Hospital, Taipei 110301, Taiwan"}]},{"given":"Cheng-Jung","family":"Wu","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235041, Taiwan"},{"name":"Biomedical Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan"}]},{"given":"Wun-Hao","family":"Cheng","sequence":"additional","affiliation":[{"name":"Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5028-2489","authenticated-orcid":false,"given":"Ying-Shuo","family":"Hsu","sequence":"additional","affiliation":[{"name":"Sleep Center, Shin Kong Wu Ho-Su Memorial Hospital, Taipei 111045, Taiwan"},{"name":"Department of Otolaryngology, Shin Kong Wu Ho-Su Memorial Hospital, Taipei 111045, Taiwan"},{"name":"School of Medicine, Fu Jen Catholic University, Taipei 242062, Taiwan"},{"name":"Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan"}]}],"member":"1968","published-online":{"date-parts":[[2021,12,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"70","DOI":"10.1016\/j.smrv.2016.07.002","article-title":"Prevalence of obstructive sleep apnea in the general population: A systematic review","volume":"34","author":"Senaratna","year":"2017","journal-title":"Sleep Med. 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