{"id":"https://openalex.org/W2582456080","doi":"https://doi.org/10.1080/07420528.2016.1277735","title":"Geographic latitude and sleep duration: A population-based survey from the Tropic of Capricorn to the Antarctic Circle","display_name":"Geographic latitude and sleep duration: A population-based survey from the Tropic of Capricorn to the Antarctic Circle","publication_year":2017,"publication_date":"2017-01-27","ids":{"openalex":"https://openalex.org/W2582456080","doi":"https://doi.org/10.1080/07420528.2016.1277735","mag":"2582456080","pmid":"https://pubmed.ncbi.nlm.nih.gov/28128998"},"language":"en","primary_location":{"id":"doi:10.1080/07420528.2016.1277735","doi":"https://doi.org/10.1080/07420528.2016.1277735","is_oa":false,"landing_page_url":"https://doi.org/10.1080/07420528.2016.1277735","pdf_url":null,"source":{"id":"https://openalex.org/S75142505","display_name":"Chronobiology International","issn_l":"0742-0528","issn":["0742-0528","1525-6073"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-c","doyens","jufo-1","ki-jl-1","medline","norway-1","poland-100","russia-white-list-2","vabb-shw"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Chronobiology International","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref","pubmed"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5052462483","display_name":"PABLO E BROCKMANN V","orcid":"https://orcid.org/0000-0002-0899-6282","observed_orcids":["https://orcid.org/0000-0002-0899-6282"]},"institutions":[{"id":"https://openalex.org/I162148367","display_name":"Pontificia Universidad Cat\u00f3lica de Chile","ror":"https://ror.org/04teye511","country_code":"CL","type":"education","lineage":["https://openalex.org/I162148367"]}],"countries":["CL"],"is_corresponding":true,"raw_author_name":"Pablo E. Brockmann","raw_affiliation_strings":["Department of Pediatric Cardiology and Pulmonology, Division of Pediatrics, School of Medicine, Pontificia Universidad Cat\u00f3lica de Chile, Santiago, Chile","Sleep Medicine Center, Department of Neurology, School of Medicine, Pontificia Universidad Cat\u00f3lica de Chile, Santiago, Chile"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Pediatric Cardiology and Pulmonology, Division of Pediatrics, School of Medicine, Pontificia Universidad Cat\u00f3lica de Chile, Santiago, Chile","institution_ids":["https://openalex.org/I162148367"]},{"raw_affiliation_string":"Sleep Medicine Center, Department of Neurology, School of Medicine, Pontificia Universidad Cat\u00f3lica de Chile, Santiago, Chile","institution_ids":["https://openalex.org/I162148367"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5043623030","display_name":"David Gozal","orcid":"https://orcid.org/0000-0001-8195-6036","observed_orcids":["https://orcid.org/0000-0001-8195-6036"]},"institutions":[{"id":"https://openalex.org/I40347166","display_name":"University of Chicago","ror":"https://ror.org/024mw5h28","country_code":"US","type":"education","lineage":["https://openalex.org/I40347166"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"David Gozal","raw_affiliation_strings":["Sections of Pediatric Sleep Medicine and Pulmonology, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Sections of Pediatric Sleep Medicine and Pulmonology, Department of Pediatrics, Pritzker School of Medicine, Biological Sciences Division, The University of Chicago, Chicago, IL, USA","institution_ids":["https://openalex.org/I40347166"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5075375521","display_name":"Luis Antonio Villarroel","orcid":"https://orcid.org/0000-0001-9603-937X","observed_orcids":["https://orcid.org/0000-0001-9603-937X"]},"institutions":[{"id":"https://openalex.org/I162148367","display_name":"Pontificia Universidad Cat\u00f3lica de Chile","ror":"https://ror.org/04teye511","country_code":"CL","type":"education","lineage":["https://openalex.org/I162148367"]}],"countries":["CL"],"is_corresponding":false,"raw_author_name":"Luis Villarroel","raw_affiliation_strings":["Department of Public Health, School of Medicine, Pontificia Universidad Cat\u00f3lica de Chile, Santiago, Chile"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Public Health, School of Medicine, Pontificia Universidad Cat\u00f3lica de Chile, Santiago, Chile","institution_ids":["https://openalex.org/I162148367"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5075649283","display_name":"L. Felipe Damiani","orcid":"https://orcid.org/0000-0002-8338-0488","observed_orcids":["https://orcid.org/0000-0002-8338-0488"]},"institutions":[{"id":"https://openalex.org/I162148367","display_name":"Pontificia Universidad Cat\u00f3lica de Chile","ror":"https://ror.org/04teye511","country_code":"CL","type":"education","lineage":["https://openalex.org/I162148367"]}],"countries":["CL"],"is_corresponding":false,"raw_author_name":"Felipe Damiani","raw_affiliation_strings":["School of Medicine, Pontificia Universidad Cat\u00f3lica de Chile, Santiago, Chile"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Medicine, Pontificia Universidad Cat\u00f3lica de Chile, Santiago, Chile","institution_ids":["https://openalex.org/I162148367"]}]},{"author_position":"middle","author":{"id":null,"display_name":"Felipe Nu\u00f1ez","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I162148367","display_name":"Pontificia Universidad Cat\u00f3lica de Chile","ror":"https://ror.org/04teye511","country_code":"CL","type":"education","lineage":["https://openalex.org/I162148367"]}],"countries":["CL"],"is_corresponding":false,"raw_author_name":"Felipe Nu\u00f1ez","raw_affiliation_strings":["School of Medicine, Pontificia Universidad Cat\u00f3lica de Chile, Santiago, Chile"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Medicine, Pontificia Universidad Cat\u00f3lica de Chile, Santiago, Chile","institution_ids":["https://openalex.org/I162148367"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5068124511","display_name":"Christian Cajochen","orcid":"https://orcid.org/0000-0003-2699-7171","observed_orcids":["https://orcid.org/0000-0003-2699-7171"]},"institutions":[{"id":"https://openalex.org/I1850255","display_name":"University of Basel","ror":"https://ror.org/02s6k3f65","country_code":"CH","type":"education","lineage":["https://openalex.org/I1850255"]},{"id":"https://openalex.org/I4210166749","display_name":"Universit\u00e4re Psychiatrische Kliniken Basel","ror":"https://ror.org/05fw3jg78","country_code":"CH","type":"healthcare","lineage":["https://openalex.org/I4210166749"]}],"countries":["CH"],"is_corresponding":false,"raw_author_name":"Christian Cajochen","raw_affiliation_strings":["Centre for Chronobiology, Psychiatric Hospital of the University of Basel, Basel, Switzerland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Centre for Chronobiology, Psychiatric Hospital of the University of Basel, Basel, Switzerland","institution_ids":["https://openalex.org/I1850255","https://openalex.org/I4210166749"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5052462483"],"corresponding_institution_ids":["https://openalex.org/I162148367"],"apc_list":null,"apc_paid":null,"fwci":3.8919,"has_fulltext":false,"cited_by_count":40,"citation_normalized_percentile":{"value":0.92815588,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"34","issue":"3","first_page":"373","last_page":"381"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10316","display_name":"Sleep and related disorders","score":0.9384999871253967,"subfield":{"id":"https://openalex.org/subfields/3205","display_name":"Experimental and Cognitive Psychology"},"field":{"id":"https://openalex.org/fields/32","display_name":"Psychology"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T10316","display_name":"Sleep and related disorders","score":0.9384999871253967,"subfield":{"id":"https://openalex.org/subfields/3205","display_name":"Experimental and Cognitive Psychology"},"field":{"id":"https://openalex.org/fields/32","display_name":"Psychology"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10342","display_name":"Circadian rhythm and melatonin","score":0.053300000727176666,"subfield":{"id":"https://openalex.org/subfields/2807","display_name":"Endocrine and Autonomic Systems"},"field":{"id":"https://openalex.org/fields/28","display_name":"Neuroscience"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T11373","display_name":"Sleep and Work-Related Fatigue","score":0.006399999838322401,"subfield":{"id":"https://openalex.org/subfields/3205","display_name":"Experimental and Cognitive Psychology"},"field":{"id":"https://openalex.org/fields/32","display_name":"Psychology"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/sleep-duration","display_name":"sleep duration","score":0.9359999895095825},{"id":"https://openalex.org/keywords/latitude","display_name":"latitude","score":0.9769999980926514},{"id":"https://openalex.org/keywords/photoperiod","display_name":"photoperiod","score":0.9670000076293945},{"id":"https://openalex.org/keywords/day-length","display_name":"day length","score":0.843999981880188},{"id":"https://openalex.org/keywords/weekend-sleep","display_name":"weekend sleep","score":0.5849999785423279},{"id":"https://openalex.org/keywords/sex-differences-in-sleep","display_name":"sex differences in sleep","score":0.8820000290870667},{"id":"https://openalex.org/keywords/chile","display_name":"Chile","score":0.453000009059906}],"concepts":[{"id":"https://openalex.org/C122523270","wikidata":"https://www.wikidata.org/wiki/Q34027","display_name":"Latitude","level":2,"score":0.8128364086151123},{"id":"https://openalex.org/C149923435","wikidata":"https://www.wikidata.org/wiki/Q37732","display_name":"Demography","level":1,"score":0.6943105459213257},{"id":"https://openalex.org/C151956035","wikidata":"https://www.wikidata.org/wiki/Q1132755","display_name":"Logistic regression","level":2,"score":0.4812064468860626},{"id":"https://openalex.org/C2908647359","wikidata":"https://www.wikidata.org/wiki/Q2625603","display_name":"Population","level":2,"score":0.45697176456451416},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.4303797483444214},{"id":"https://openalex.org/C2777882148","wikidata":"https://www.wikidata.org/wiki/Q190991","display_name":"Polar night","level":3,"score":0.42752110958099365},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.3530730605125427},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.12852364778518677},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.1048816442489624},{"id":"https://openalex.org/C13280743","wikidata":"https://www.wikidata.org/wiki/Q131089","display_name":"Geodesy","level":1,"score":0.0},{"id":"https://openalex.org/C144024400","wikidata":"https://www.wikidata.org/wiki/Q21201","display_name":"Sociology","level":0,"score":0.0},{"id":"https://openalex.org/C163861444","wikidata":"https://www.wikidata.org/wiki/Q108376","display_name":"Stratosphere","level":2,"score":0.0}],"mesh":[{"descriptor_ui":"D000328","descriptor_name":"Adult","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000864","descriptor_name":"Antarctic Regions","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D002940","descriptor_name":"Circadian Rhythm","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":true},{"descriptor_ui":"D004777","descriptor_name":"Environment","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008297","descriptor_name":"Male","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008875","descriptor_name":"Middle Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D011795","descriptor_name":"Surveys and Questionnaires","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D012621","descriptor_name":"Seasons","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012890","descriptor_name":"Sleep","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":true},{"descriptor_ui":"D013997","descriptor_name":"Time Factors","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D016015","descriptor_name":"Logistic Models","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D017440","descriptor_name":"Photoperiod","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":2,"locations":[{"id":"doi:10.1080/07420528.2016.1277735","doi":"https://doi.org/10.1080/07420528.2016.1277735","is_oa":false,"landing_page_url":"https://doi.org/10.1080/07420528.2016.1277735","pdf_url":null,"source":{"id":"https://openalex.org/S75142505","display_name":"Chronobiology International","issn_l":"0742-0528","issn":["0742-0528","1525-6073"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-c","doyens","jufo-1","ki-jl-1","medline","norway-1","poland-100","russia-white-list-2","vabb-shw"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Chronobiology International","raw_type":"journal-article"},{"id":"pmid:28128998","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/28128998","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Chronobiology international","raw_type":"Journal Article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Good health and well-being","score":0.9391000270843506,"id":"https://metadata.un.org/sdg/3"}],"study_designs":[],"awards":[{"id":"https://openalex.org/G515655599","display_name":null,"funder_award_id":"11130573","funder_id":"https://openalex.org/F4320338073","funder_display_name":"Fondo Nacional de Desarrollo Cient\u00edfico y Tecnol\u00f3gico"}],"funders":[{"id":"https://openalex.org/F4320338073","display_name":"Fondo Nacional de Desarrollo Cient\u00edfico y Tecnol\u00f3gico","ror":"https://ror.org/02ap3w078"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":30,"referenced_works":["https://openalex.org/W757286634","https://openalex.org/W1770765878","https://openalex.org/W1856825239","https://openalex.org/W1943935398","https://openalex.org/W1976540948","https://openalex.org/W1977701352","https://openalex.org/W1979906308","https://openalex.org/W1986073604","https://openalex.org/W2004872135","https://openalex.org/W2007616848","https://openalex.org/W2031750226","https://openalex.org/W2038212223","https://openalex.org/W2044430499","https://openalex.org/W2055196174","https://openalex.org/W2071870971","https://openalex.org/W2085352629","https://openalex.org/W2088948024","https://openalex.org/W2097654472","https://openalex.org/W2119709271","https://openalex.org/W2122931217","https://openalex.org/W2128764603","https://openalex.org/W2138650696","https://openalex.org/W2141289928","https://openalex.org/W2142091700","https://openalex.org/W2166874401","https://openalex.org/W2176977339","https://openalex.org/W2189327049","https://openalex.org/W2258564794","https://openalex.org/W2346338506","https://openalex.org/W2405196551"],"related_works":["https://openalex.org/W4405634480","https://openalex.org/W4414823321","https://openalex.org/W7123057439","https://openalex.org/W7160645869","https://openalex.org/W2897249898","https://openalex.org/W7165550913","https://openalex.org/W4413282904","https://openalex.org/W4412714063","https://openalex.org/W2338863643","https://openalex.org/W2001493318"],"abstract_inverted_index":{"The":[0],"impact":[1],"of":[2,50,73,164],"latitude":[3,12],"on":[4,16,27,37,91,176],"sleep":[5,32,46,89,175,188,193],"duration":[6,33,90,194],"remains":[7],"virtually":[8],"unexplored,":[9],"even":[10,141],"though":[11],"exerts":[13],"profound":[14],"influences":[15],"daylight":[17],"duration.":[18],"Using":[19],"Chile":[20],"as":[21,207],"a":[22],"one-country":[23],"model,":[24],"we":[25,43],"explored":[26],"the":[28,38,113,121,151],"potential":[29],"associations":[30,214],"between":[31,61],"and":[34,93,100,147],"latitude.":[35],"Based":[36],"2nd":[39],"Chilean":[40,58],"Health":[41],"Survey,":[42],"identified":[44],"reported":[45,187],"data":[47],"during":[48,201],"spring":[49],"people":[51],"living":[52],"from":[53,107],"north":[54,114],"to":[55,63,115,130,135,184,191,216],"south":[56],"in":[57,112,120,199,212,219],"cities,":[59],"located":[60],"18\u00b029'S":[62,129],"53\u00b018'S":[64],"(4329":[65],"km":[66],"distance":[67],"at":[68,157],"same":[69],"longitude).":[70],"A":[71],"total":[72],"n":[74],"=":[75],"2493":[76],"participants":[77],"were":[78],"included":[79],"(mean":[80],"age":[81],"45.3":[82],"\u00b1":[83,97,102,109,117],"18.4":[84],"years,":[85],"41.8%":[86],"males).":[87],"Mean":[88],"workdays":[92],"weekends":[94,177],"was":[95],"7.42":[96],"1.71":[98],"h,":[99,104],"7.91":[101,108],"2.13":[103],"respectively,":[105],"ranging":[106],"1.92":[110],"h":[111,119],"8.33":[116],"1.89":[118],"south,":[122],"such":[123,206],"that":[124],"more":[125,136],"northern":[126,158],"latitudes":[127,138,159],"(i.e.,":[128,139],"39\u00b050'S)":[131],"slept":[132],"less":[133],"compared":[134],"southern":[137,180],"51\u00b043'S-53\u00b018'),":[140],"after":[142],"controlling":[143],"for":[144,172],"age,":[145],"gender,":[146],"socioeconomic":[148],"status.":[149],"In":[150],"logistic":[152],"regression":[153],"models,":[154],"men":[155,200],"residing":[156],"exhibited":[160],"an":[161],"odds":[162],"ratio":[163],"3.348":[165],"[95%":[166],"CI:":[167],"1.905-5.882;":[168],"p":[169],"<":[170],"0.0001]":[171],"having":[173],"shorter":[174],"than":[178],"their":[179],"counterparts.":[181],"Latitude":[182],"appears":[183],"strongly":[185],"affect":[186],"patterns,":[189],"leading":[190],"longer":[192],"with":[195],"increasing":[196],"latitude,":[197],"particularly":[198],"weekends.":[202],"Whether":[203],"environmental":[204],"factors":[205],"photoperiod":[208],"are":[209],"causally":[210],"involved":[211],"theses":[213],"needs":[215],"be":[217],"elucidated":[218],"future":[220],"studies.":[221]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":8},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":11},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":3},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":5},{"year":2018,"cited_by_count":3},{"year":2017,"cited_by_count":1}],"updated_date":"2026-10-31T12:09:11.096373","created_date":"2017-02-03T00:00:00"}
