{"doi":"10.12746/swrccc.v5i20.408","title":"Sleep quality, sleep habits, and chronotypes of medical interns at the beginning of their training","abstract":"<jats:p>Introduction: Despite the implementation of resident work hour regulations, studieshave not consistently shown beneficial changes in residents’ sleep quality or duration. Wehypothesized that inter-individual sleep-related differences may exist prior to training and thepre-existing sleep health and habits may impact training.Objective: To determine interns’ baseline sleep quality, sleep hygiene, chronotypes, andtheir correlates at the beginning of their residency training program.Methods: A cross-sectional study using an anonymous “Resident Sleep Survey” includedbaseline demographic information and questionnaires, including the Epworth SleepinessScale (ESS), the Pittsburgh’s Sleep Quality Index (PSQI), the Morningness-EveningnessQuestionnaire (MEQ), and the Sleep Hygiene Index (SHI).Results: One hundred and twenty-nine subjects participated the study; 45.7 % (n=59)were male and 18.6 % (n=24) were married. Twenty percent of interns had an ESS &gt;10. ThePSQI revealed that 28% of interns had poor sleep hygiene. The mean sleep efficiency was91.2 ±7.4% estimated from the PSQI. Non-married interns had a lower prevalence of morningchronotypes (22.3% vs. 45.8%, p=0.02). Morning chronotype interns had a lower ESS score(6.1 ±3.1 vs. 7.6 ±3.6, p=0.03) and a lower SHI (29 ±7.0 vs. 34.3 ±7.1, p=0.003).Conclusion: About a quarter of interns had poor sleep quality and excessive daytimesleepiness prior to their training. Non-morning chronotype interns appeared to have moredaytime sleepiness and poorer sleep quality. Since pre-existing sleep problems may adverselyaffect learning, we suggest that strategies to improve sleep hygiene and quality in this specificpopulation should be emphasized early in their training.</jats:p>","journal":"The Southwest Respiratory and Critical Care Chronicles","year":2017,"id":676528,"datarank":0.21111482016109406,"base_score":1.0986122886681096,"endowment":1.0986122886681096,"self_citation_contribution":0.16479184330021646,"citation_network_contribution":0.046322976860877614,"self_endowment_contribution":0.16479184330021646,"citer_contribution":0.046322976860877614,"corpus_percentile":null,"corpus_rank":null,"citation_count":2,"citer_count":2,"citers_with_citation_signal":1,"citers_with_endowment":1,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1767651,"name":"Pantaree Aswanetmanee","orcid":null,"position":1,"is_corresponding":false},{"id":1767654,"name":"Mustafa Awili","orcid":null,"position":2,"is_corresponding":false},{"id":1767656,"name":"Ahmed Raziuddin","orcid":null,"position":3,"is_corresponding":false},{"id":1767658,"name":"Supat Thammasitboon","orcid":null,"position":4,"is_corresponding":false},{"id":1767648,"name":"Chok Limsuwat","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Sleep quality, sleep habits, and chronotypes of medical interns at the beginning of their training","abstract":"<jats:p>Introduction: Despite the implementation of resident work hour regulations, studieshave not consistently shown beneficial changes in residents’ sleep quality or duration. Wehypothesized that inter-individual sleep-related differences may exist prior to training and thepre-existing sleep health and habits may impact training.Objective: To determine interns’ baseline sleep quality, sleep hygiene, chronotypes, andtheir correlates at the beginning of their residency training program.Methods: A cross-sectional study using an anonymous “Resident Sleep Survey” includedbaseline demographic information and questionnaires, including the Epworth SleepinessScale (ESS), the Pittsburgh’s Sleep Quality Index (PSQI), the Morningness-EveningnessQuestionnaire (MEQ), and the Sleep Hygiene Index (SHI).Results: One hundred and twenty-nine subjects participated the study; 45.7 % (n=59)were male and 18.6 % (n=24) were married. Twenty percent of interns had an ESS &gt;10. ThePSQI revealed that 28% of interns had poor sleep hygiene. The mean sleep efficiency was91.2 ±7.4% estimated from the PSQI. Non-married interns had a lower prevalence of morningchronotypes (22.3% vs. 45.8%, p=0.02). Morning chronotype interns had a lower ESS score(6.1 ±3.1 vs. 7.6 ±3.6, p=0.03) and a lower SHI (29 ±7.0 vs. 34.3 ±7.1, p=0.003).Conclusion: About a quarter of interns had poor sleep quality and excessive daytimesleepiness prior to their training. Non-morning chronotype interns appeared to have moredaytime sleepiness and poorer sleep quality. Since pre-existing sleep problems may adverselyaffect learning, we suggest that strategies to improve sleep hygiene and quality in this specificpopulation should be emphasized early in their training.</jats:p>","is_dataset_classified":null,"base_score":1.0986122886681096,"endowment":1.0986122886681096,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"26207759","pmcid":null,"openalex_id":"https://openalex.org/W2737384542","authors":[],"funders":[],"total_grants":0,"fwci":0.215,"citation_percentile":0.61085716,"influential_citations":0,"citation_trend":[{"year":2020,"count":1},{"year":2021,"count":1}],"oa_status":"gold","license":"cc-by-sa","oa_locations":[{"url":"https://pulmonarychronicles.com/index.php/pulmonarychronicles/article/download/408/899","host_type":"journal"},{"url":"https://pulmonarychronicles.com/index.php/pulmonarychronicles/article/download/408/899","host_type":"publisher"},{"url":"http://www.pulmonarychronicles.com/index.php/pulmonarychronicles/article/viewFile/408/901","host_type":"publisher"},{"url":"http://www.pulmonarychronicles.com/index.php/pulmonarychronicles/article/viewFile/408/899","host_type":"publisher"},{"url":"https://doi.org/10.12746/swrccc.v5i20.408","host_type":"journal"},{"url":"https://doaj.org/article/500de046f5774f10975c8fab1c01dfd0","host_type":"repository"}],"fields_of_study":["Sleep and related disorders","Sleep and Work-Related Fatigue","Hospital Admissions and Outcomes"],"mesh_terms":[],"keywords":["Chronotype","Pittsburgh Sleep Quality Index","Sleep hygiene","Sleep (system call)","Morning","Medicine","Epworth Sleepiness Scale","Sleep debt","Sleep quality","Sleep deprivation","Gerontology","Psychology","Physical therapy","Psychiatry","Circadian rhythm","Polysomnography","Internal medicine","Insomnia"],"sdg_mappings":[{"sdg_number":0,"sdg_label":"No poverty"}],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-08-17T02:41:57.520377Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}