{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T03:18:06Z","timestamp":1787023086335,"version":"build-2736575974"},"reference-count":21,"publisher":"FapUNIFESP (SciELO)","issue":"11","license":[{"start":{"date-parts":[[2025,1,1]],"date-time":"2025-01-01T00:00:00Z","timestamp":1735689600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2025,1,1]],"date-time":"2025-01-01T00:00:00Z","timestamp":1735689600000},"content-version":"am","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2025,1,1]],"date-time":"2025-01-01T00:00:00Z","timestamp":1735689600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Rev. Assoc. Med. Bras."],"abstract":"<jats:p>SUMMARY  OBJECTIVE: This study assessed sleep quality and habits affecting sleep among medical students in Alagoas, Brazil.  METHODS: An online survey was conducted using the Pittsburgh Sleep Quality Index and the Epworth Sleepiness Scale, and a questionnaire on caffeinated beverage and calming herbal tea intake, medication use, and daily screen time was administered.  RESULTS: A total of 165 students participated, 56.36% of whom were female. The Pittsburgh Sleep Quality Index results showed that 58.2% were poor sleepers, 15.2% had poor sleep quality, and 26.7% were good sleepers. Only 36% met the recommended 7\u20139 h of sleep per day. Shorter sleep duration correlated with poorer sleep quality and increased daytime sleepiness (rho=-0.5). No significant sex differences were observed. Participants were categorized as early-to-bed (51.5%, 23.9\u00b14.9 years; 62% women) and late-to-bed (48.5%, 23.7\u00b15.7 years; 50% women). The late-to-bed group showed poorer sleep quality, greater daytime sleepiness, and 1.4 h less sleep than the early-to-bed group (p&lt;0.01). A later sleep schedule was significantly associated with poorer sleep quality, shorter duration, and greater daytime sleepiness (p&lt;0.01). The semester of study did not significantly influence bedtime (p=0.45). No significant group differences were found in beverage or medication use.  CONCLUSION: This study highlights the need for targeted interventions to improve sleep quality and duration by addressing late bedtimes and contributing factors to daytime sleepiness.<\/jats:p>","DOI":"10.1590\/1806-9282.20250630","type":"journal-article","created":{"date-parts":[[2025,12,5]],"date-time":"2025-12-05T15:06:25Z","timestamp":1764947185000},"source":"Crossref","is-referenced-by-count":2,"title":["Poor sleep quality and daytime sleepiness in medical students: role of late bedtimes"],"prefix":"10.1590","volume":"71","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3902-7983","authenticated-orcid":false,"given":"Aldo da Silva","family":"Oliveira","sequence":"first","affiliation":[{"name":"Universidade Federal de Alagoas,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-4843-5604","authenticated-orcid":false,"given":"Lu\u00eds Alberto Maciel","family":"Porto","sequence":"additional","affiliation":[{"name":"Universidade Federal de Alagoas,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-1035-369X","authenticated-orcid":false,"given":"Mariana Sousa","family":"Ibiapina","sequence":"additional","affiliation":[{"name":"Universidade Estadual de Ci\u00eancias da Sa\u00fade de Alagoas,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-3583-0768","authenticated-orcid":false,"given":"Karla Ianara Silva","family":"Tavares","sequence":"additional","affiliation":[{"name":"Universidade Federal de Alagoas,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5444-1261","authenticated-orcid":false,"given":"Lanni Sarmento da","family":"Rocha","sequence":"additional","affiliation":[{"name":"Universidade Federal de Alagoas,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3877-1594","authenticated-orcid":false,"given":"Edoarda Vasco de Albuquerque","family":"Albuquerque","sequence":"additional","affiliation":[{"name":"Hospital Universit\u00e1rio Professor Alberto Antunes,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9682-030X","authenticated-orcid":false,"given":"Luciane de Souza","family":"Medeiros","sequence":"additional","affiliation":[{"name":"Universidade Federal de Alagoas,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0422-4522","authenticated-orcid":false,"given":"Adriana","family":"Ximenes-da-Silva","sequence":"additional","affiliation":[{"name":"Universidade Federal de Alagoas,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"530","published-online":{"date-parts":[[2025]]},"reference":[{"issue":"4","key":"ref1","doi-asserted-by":"crossref","first-page":"848","DOI":"10.1212\/CON.0000000000000878","article-title":"Neurobiology and neuroprotective benefits of sleep","volume":"26","author":"Schneider L","year":"2020","journal-title":"Continuum (Minneap Minn)"},{"issue":"3","key":"ref2","doi-asserted-by":"crossref","first-page":"1151","DOI":"10.1007\/s11325-020-02020-5","article-title":"Sleep quality in medical students: a comprehensive meta-analysis of observational studies","volume":"24","author":"Rao WW","year":"2020","journal-title":"Sleep Breath"},{"issue":"6","key":"ref3","doi-asserted-by":"crossref","first-page":"1170","DOI":"10.1111\/jocs.14646","article-title":"COVID-19 pandemic: beyond medical education in Brazil","volume":"35","author":"Carvalho VO","year":"2020","journal-title":"J Card 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