{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,4]],"date-time":"2026-09-04T06:18:59Z","timestamp":1788502739558,"version":"build-2803163510"},"reference-count":29,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2021,8,6]],"date-time":"2021-08-06T00:00:00Z","timestamp":1628208000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clinical Respiratory J"],"published-print":{"date-parts":[[2021,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Chronic obstructive pulmonary disease (COPD) increases susceptibility to sleep disturbances. This study aimed to evaluate the association between COPD severity criteria with sleep quality.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>One hundred fifty\u2010eight patients in Rasul Akram Hospital of Iran University of Medical Sciences, Tehran, Iran, from April 2019 to March 2021 diagnosed with COPD were examined using the Pittsburgh Sleep Quality Index (PSQI), COPD Assessment Test (CAT), modified Medical Research Council (mMRC) dyspnoea scale, spirometry and pulse oximetry.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Of 158 subjects, 125 patients were male (79%), and 33 were female (21%). The mean subject's age and FEV1\/FVC ratio were 62.6\u00a0\u00b1\u200911.5 and 65.6\u00a0\u00b1\u200914.9%, respectively. The mean CAT scoring and Spo2 saturation reported 16.2\u00a0\u00b1\u00a07 and 91.5\u00a0\u00b1\u00a010.8%, respectively. The mean PSQI score was 8.2\u00a0\u00b1\u00a03.8. The association between PSQI score with FEV1 and FEV1\/FVC ratio was not statistically significant (<jats:italic>p<\/jats:italic>\u00a0=\u00a00.64 and 0.58, respectively), whereas the association between PSQI scores with CAT score (<jats:italic>p<\/jats:italic>\u00a0\u02c2\u00a00.0001, <jats:italic>r<\/jats:italic><jats:sup>2<\/jats:sup>\u00a0=\u00a00.51) and dyspnoea severity (<jats:italic>p<\/jats:italic>\u00a0\u02c2\u00a00.0001, <jats:italic>r<\/jats:italic><jats:sup>2<\/jats:sup>\u00a0=\u00a00.29) were statistically significant. The patients with higher CAT score demonstrated poor sleep quality, particularly in longer sleep latency (<jats:italic>p<\/jats:italic>\u00a0=\u00a00.001, <jats:italic>r<\/jats:italic><jats:sup>2<\/jats:sup>\u00a0=\u00a00.056), bad subjective sleep quality (<jats:italic>p<\/jats:italic>\u00a0\u02c2\u00a00.0001, <jats:italic>r<\/jats:italic><jats:sup>2<\/jats:sup>\u00a0=\u00a00.286), lower sleep efficiency (<jats:italic>p<\/jats:italic>\u00a0=\u00a00.002, <jats:italic>r<\/jats:italic><jats:sup>2<\/jats:sup>\u00a0=\u00a00.077), higher sleep disturbance (<jats:italic>p<\/jats:italic>\u00a0\u02c2\u00a00.0001, <jats:italic>r<\/jats:italic><jats:sup>2<\/jats:sup>\u00a0=\u00a00.225), daytime dysfunction (<jats:italic>p<\/jats:italic>\u00a0\u02c2\u00a00.0001, <jats:italic>r<\/jats:italic><jats:sup>2<\/jats:sup>\u00a0=\u00a00.259) and sleep medication intake times a week (<jats:italic>p<\/jats:italic>\u00a0=\u00a00.01, <jats:italic>r<\/jats:italic><jats:sup>2<\/jats:sup>\u00a0=\u00a00.069). Dyspnoea severity was attributed to bad subjective sleep quality (<jats:italic>p<\/jats:italic>\u00a0\u02c2\u00a00.0001, <jats:italic>r<\/jats:italic><jats:sup>2<\/jats:sup>\u00a0=\u00a00.069), higher sleep disturbances (<jats:italic>p<\/jats:italic>\u00a0=\u00a00.005, <jats:italic>r<\/jats:italic><jats:sup>2<\/jats:sup>\u00a0=\u00a00.08), and daytime dysfunction (<jats:italic>p<\/jats:italic>\u00a0\u02c2\u00a00.0001, <jats:italic>r<\/jats:italic><jats:sup>2<\/jats:sup>\u00a0=\u00a00.108).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The PSQI has a significant association with the CAT and mMRC for COPD patients and is linked to the disease's severity.<\/jats:p><\/jats:sec>","DOI":"10.1111\/crj.13423","type":"journal-article","created":{"date-parts":[[2021,7,26]],"date-time":"2021-07-26T12:39:12Z","timestamp":1627303152000},"page":"1168-1174","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["The association between sleep quality, health status and disability due to breathlessness in chronic obstructive pulmonary disease patients"],"prefix":"10.1111","volume":"15","author":[{"given":"Mirfarhad","family":"Ghalehbandi","sequence":"first","affiliation":[{"name":"Mental Health Research Center, Rasoul Akram Medical Complex Iran University of Medical Sciences (IUMS)  Tehran Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shahrzad","family":"Khosravifar","sequence":"additional","affiliation":[{"name":"Mental Health Research Center, Rasoul Akram Medical Complex Iran University of Medical Sciences (IUMS)  Tehran Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Oldooz","family":"Aloosh","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, School of Medicine, Hazrat\u2010e Rasool General Hospital Iran University of Medical Sciences (IUMS)  Tehran Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ania","family":"Rahimi\u2010Golkhandan","sequence":"additional","affiliation":[{"name":"Occupational Sleep Research Center, Baharloo Hospital Tehran University of Medical Sciences  Tehran Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3033-9737","authenticated-orcid":false,"given":"Mahdi","family":"Abounoori","sequence":"additional","affiliation":[{"name":"Student Research Committee, School of Medicine Mazandaran University of Medical Sciences  Sari Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amirmohammad","family":"Aloosh","sequence":"additional","affiliation":[{"name":"Islamic Azad University of Hamedan (IAUH)  Hamedan Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hale","family":"Afshar","sequence":"additional","affiliation":[{"name":"Department of Pulmonary Medicine, Hazrat Rasool Akram Hospital Iran University of Medical Sciences (IUMS)  Tehran Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shaghayegh","family":"Khosravifar","sequence":"additional","affiliation":[{"name":"Department of Psychiatry, School of Medicine Isfahan University of Medical Sciences  Isfahan Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,8,6]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1164\/rccm.201204-0596PP"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.4103\/lungindia.lungindia_129_18"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1183\/09031936.06.00024505"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.2147\/COPD.S122485"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.1378\/chest.117.2_suppl.48S"},{"key":"e_1_2_10_7_1","doi-asserted-by":"publisher","DOI":"10.1183\/09031936.02.03242002"},{"key":"e_1_2_10_8_1","doi-asserted-by":"publisher","DOI":"10.1183\/09059180.00003213"},{"key":"e_1_2_10_9_1","doi-asserted-by":"publisher","DOI":"10.2147\/COPD.S76157"},{"key":"e_1_2_10_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.sleep.2011.12.007"},{"key":"e_1_2_10_11_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1440-1843.2012.02217.x"},{"key":"e_1_2_10_12_1","doi-asserted-by":"publisher","DOI":"10.5664\/jcsm.4540"},{"issue":"10","key":"e_1_2_10_13_1","first-page":"1333","article-title":"Sleep\u2010disordered breathing and COPD: the overlap syndrome","volume":"55","author":"Owens RL","year":"2010","journal-title":"Respir Care"},{"key":"e_1_2_10_14_1","doi-asserted-by":"publisher","DOI":"10.3109\/15412555.2011.560583"},{"key":"e_1_2_10_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/0165-1781(89)90047-4"},{"key":"e_1_2_10_16_1","doi-asserted-by":"publisher","DOI":"10.1183\/09031936.04.00014304"},{"key":"e_1_2_10_17_1","unstructured":"Organization WH.Obesity: preventing and managing the global epidemic.2000."},{"key":"e_1_2_10_18_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11325-010-0478-5"},{"key":"e_1_2_10_19_1","doi-asserted-by":"publisher","DOI":"10.1183\/09031936.00102509"},{"key":"e_1_2_10_20_1","doi-asserted-by":"publisher","DOI":"10.1159\/000336549"},{"key":"e_1_2_10_21_1","doi-asserted-by":"crossref","unstructured":"MackayAJ.Utility of the COPD assessment test TM (CAT) to evaluate severity of COPD exacerbations.2012.","DOI":"10.1164\/ajrccm-conference.2012.185.1_MeetingAbstracts.A1513"},{"issue":"4","key":"e_1_2_10_22_1","first-page":"59","article-title":"Reliability of Persian version of COPD assessment test and its association with disease severity","volume":"18","author":"Sigari N","year":"2012","journal-title":"Sci J Kurd Univ Med Sci"},{"key":"e_1_2_10_23_1","first-page":"7","article-title":"Epidemiology standardization project (American Thoracic Society). Recommended respiratory disease questionnaires for use with adult and children in epidemiological research","volume":"118","author":"Ferris B","year":"1978","journal-title":"Am Rev Respir Dis"},{"key":"e_1_2_10_24_1","doi-asserted-by":"publisher","DOI":"10.2147\/COPD.S15666"},{"key":"e_1_2_10_25_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.sleep.2014.12.025"},{"key":"e_1_2_10_26_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chest.2019.04.132"},{"key":"e_1_2_10_27_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jaci.2005.08.005"},{"key":"e_1_2_10_28_1","doi-asserted-by":"publisher","DOI":"10.3109\/07853890.2012.732703"},{"key":"e_1_2_10_29_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejcnurse.2009.06.003"},{"key":"e_1_2_10_30_1","doi-asserted-by":"publisher","DOI":"10.1164\/rccm.200912-1869OC"}],"container-title":["The Clinical Respiratory Journal"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/crj.13423","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/crj.13423","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/crj.13423","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,8,28]],"date-time":"2023-08-28T09:47:14Z","timestamp":1693216034000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/crj.13423"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,8,6]]},"references-count":29,"journal-issue":{"issue":"11","published-print":{"date-parts":[[2021,11]]}},"alternative-id":["10.1111\/crj.13423"],"URL":"https:\/\/doi.org\/10.1111\/crj.13423","archive":["Portico"],"relation":{},"ISSN":["1752-6981","1752-699X"],"issn-type":[{"value":"1752-6981","type":"print"},{"value":"1752-699X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,8,6]]},"assertion":[{"value":"2021-04-19","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-07-15","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-08-06","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}