{"id":"https://openalex.org/W7225833929","doi":"https://doi.org/10.21203/rs.3.rs-11383335/v1","title":"Temporal representation of vital signs for mortality prediction after major abdominal surgery: external validation and sampling- resolution analysis","display_name":"Temporal representation of vital signs for mortality prediction after major abdominal surgery: external validation and sampling- resolution analysis","publication_year":2026,"publication_date":"2026-11-11","ids":{"openalex":"https://openalex.org/W7225833929","doi":"https://doi.org/10.21203/rs.3.rs-11383335/v1"},"language":"en","primary_location":{"id":"doi:10.21203/rs.3.rs-11383335/v1","doi":"https://doi.org/10.21203/rs.3.rs-11383335/v1","is_oa":true,"landing_page_url":"https://doi.org/10.21203/rs.3.rs-11383335/v1","pdf_url":null,"source":{"id":"https://openalex.org/S4306525896","display_name":"Research Square","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Research Square","raw_type":"posted-content"},"volume":null,"type":"preprint","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://doi.org/10.21203/rs.3.rs-11383335/v1","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5133332860","display_name":"Qiuxia Huang","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210143087","display_name":"Fujian Provincial Hospital","ror":"https://ror.org/045wzwx52","country_code":"CN","type":"healthcare","lineage":["https://openalex.org/I4210143087"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Qiuxia Huang","raw_affiliation_strings":["Fujian Provincial Hospital"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Fujian Provincial Hospital","institution_ids":["https://openalex.org/I4210143087"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5161435455","display_name":"Long Huang","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210143087","display_name":"Fujian Provincial Hospital","ror":"https://ror.org/045wzwx52","country_code":"CN","type":"healthcare","lineage":["https://openalex.org/I4210143087"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Long Huang","raw_affiliation_strings":["Fujian Provincial Hospital"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Fujian Provincial Hospital","institution_ids":["https://openalex.org/I4210143087"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5161482364","display_name":"Sheng Lin\u00b2","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210143087","display_name":"Fujian Provincial Hospital","ror":"https://ror.org/045wzwx52","country_code":"CN","type":"healthcare","lineage":["https://openalex.org/I4210143087"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Sheng Lin\u00b2","raw_affiliation_strings":["Fujian Provincial Hospital"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Fujian Provincial Hospital","institution_ids":["https://openalex.org/I4210143087"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5022629207","display_name":"Fengfeng Lu","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210143087","display_name":"Fujian Provincial Hospital","ror":"https://ror.org/045wzwx52","country_code":"CN","type":"healthcare","lineage":["https://openalex.org/I4210143087"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Fengfeng Lu","raw_affiliation_strings":["Fujian Provincial Hospital"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Fujian Provincial Hospital","institution_ids":["https://openalex.org/I4210143087"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5022629207"],"corresponding_institution_ids":["https://openalex.org/I4210143087"],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T13702","display_name":"Machine Learning in Healthcare","score":0.6557999849319458,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T13702","display_name":"Machine Learning in Healthcare","score":0.6557999849319458,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10218","display_name":"Sepsis Diagnosis and Treatment","score":0.1964000016450882,"subfield":{"id":"https://openalex.org/subfields/2706","display_name":"Critical Care and Intensive Care Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11930","display_name":"Cardiac, Anesthesia and Surgical Outcomes","score":0.033900000154972076,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[],"concepts":[{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.6913999915122986},{"id":"https://openalex.org/C44249647","wikidata":"https://www.wikidata.org/wiki/Q208498","display_name":"Confidence interval","level":2,"score":0.6843000054359436},{"id":"https://openalex.org/C58471807","wikidata":"https://www.wikidata.org/wiki/Q327120","display_name":"Receiver operating characteristic","level":2,"score":0.6779000163078308},{"id":"https://openalex.org/C2776890885","wikidata":"https://www.wikidata.org/wiki/Q1067560","display_name":"Vital signs","level":2,"score":0.6290000081062317},{"id":"https://openalex.org/C50965678","wikidata":"https://www.wikidata.org/wiki/Q2724302","display_name":"Abnormality","level":2,"score":0.6157000064849854},{"id":"https://openalex.org/C2776376669","wikidata":"https://www.wikidata.org/wiki/Q5094647","display_name":"Intensive care unit","level":2,"score":0.5357999801635742},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.43720000982284546},{"id":"https://openalex.org/C40993552","wikidata":"https://www.wikidata.org/wiki/Q514654","display_name":"Gold standard (test)","level":2,"score":0.4352000057697296},{"id":"https://openalex.org/C152877465","wikidata":"https://www.wikidata.org/wiki/Q208042","display_name":"Regression analysis","level":2,"score":0.42080000042915344},{"id":"https://openalex.org/C2987404301","wikidata":"https://www.wikidata.org/wiki/Q679690","display_name":"Intensive care","level":2,"score":0.3986000120639801},{"id":"https://openalex.org/C67761136","wikidata":"https://www.wikidata.org/wiki/Q2105849","display_name":"Post-hoc analysis","level":2,"score":0.3971000015735626},{"id":"https://openalex.org/C83546350","wikidata":"https://www.wikidata.org/wiki/Q1139051","display_name":"Regression","level":2,"score":0.39079999923706055},{"id":"https://openalex.org/C167135981","wikidata":"https://www.wikidata.org/wiki/Q2146302","display_name":"Retrospective cohort study","level":2,"score":0.38199999928474426},{"id":"https://openalex.org/C2780283014","wikidata":"https://www.wikidata.org/wiki/Q209583","display_name":"Tachycardia","level":2,"score":0.3749000132083893},{"id":"https://openalex.org/C2776359362","wikidata":"https://www.wikidata.org/wiki/Q2145286","display_name":"Representation (politics)","level":3,"score":0.3571999967098236},{"id":"https://openalex.org/C2776331378","wikidata":"https://www.wikidata.org/wiki/Q56002","display_name":"Ventricular tachycardia","level":2,"score":0.3440000116825104},{"id":"https://openalex.org/C9357733","wikidata":"https://www.wikidata.org/wiki/Q6878417","display_name":"Missing data","level":2,"score":0.3296000063419342},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.3131999969482422},{"id":"https://openalex.org/C48921125","wikidata":"https://www.wikidata.org/wiki/Q10861030","display_name":"Linear regression","level":2,"score":0.31049999594688416},{"id":"https://openalex.org/C76318530","wikidata":"https://www.wikidata.org/wiki/Q16833590","display_name":"Area under the curve","level":2,"score":0.2897999882698059},{"id":"https://openalex.org/C175079658","wikidata":"https://www.wikidata.org/wiki/Q7312165","display_name":"Remote patient monitoring","level":2,"score":0.28949999809265137},{"id":"https://openalex.org/C534262118","wikidata":"https://www.wikidata.org/wiki/Q177719","display_name":"Medical diagnosis","level":2,"score":0.2750000059604645},{"id":"https://openalex.org/C76538665","wikidata":"https://www.wikidata.org/wiki/Q6294669","display_name":"Oxygen saturation","level":3,"score":0.27320000529289246},{"id":"https://openalex.org/C2777953023","wikidata":"https://www.wikidata.org/wiki/Q1073121","display_name":"Heart rate","level":3,"score":0.26910001039505005},{"id":"https://openalex.org/C103402496","wikidata":"https://www.wikidata.org/wiki/Q1106171","display_name":"Prediction interval","level":2,"score":0.26820001006126404},{"id":"https://openalex.org/C18747219","wikidata":"https://www.wikidata.org/wiki/Q620994","display_name":"Standard error","level":2,"score":0.263700008392334},{"id":"https://openalex.org/C170964787","wikidata":"https://www.wikidata.org/wiki/Q7611170","display_name":"Stepwise regression","level":2,"score":0.2621000111103058},{"id":"https://openalex.org/C2780040984","wikidata":"https://www.wikidata.org/wiki/Q79785","display_name":"Electrocardiography","level":2,"score":0.25920000672340393},{"id":"https://openalex.org/C165838908","wikidata":"https://www.wikidata.org/wiki/Q736777","display_name":"Calibration","level":2,"score":0.25679999589920044},{"id":"https://openalex.org/C3020225094","wikidata":"https://www.wikidata.org/wiki/Q80091","display_name":"Area under curve","level":3,"score":0.25679999589920044},{"id":"https://openalex.org/C2777495988","wikidata":"https://www.wikidata.org/wiki/Q217111","display_name":"Bradycardia","level":4,"score":0.2551000118255615}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.21203/rs.3.rs-11383335/v1","doi":"https://doi.org/10.21203/rs.3.rs-11383335/v1","is_oa":true,"landing_page_url":"https://doi.org/10.21203/rs.3.rs-11383335/v1","pdf_url":null,"source":{"id":"https://openalex.org/S4306525896","display_name":"Research Square","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Research Square","raw_type":"posted-content"}],"best_oa_location":{"id":"doi:10.21203/rs.3.rs-11383335/v1","doi":"https://doi.org/10.21203/rs.3.rs-11383335/v1","is_oa":true,"landing_page_url":"https://doi.org/10.21203/rs.3.rs-11383335/v1","pdf_url":null,"source":{"id":"https://openalex.org/S4306525896","display_name":"Research Square","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Research Square","raw_type":"posted-content"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":34,"referenced_works":["https://openalex.org/W1131840578","https://openalex.org/W1966716734","https://openalex.org/W2045030989","https://openalex.org/W2119910794","https://openalex.org/W2121499426","https://openalex.org/W2122825543","https://openalex.org/W2141007997","https://openalex.org/W2163278718","https://openalex.org/W2295598076","https://openalex.org/W2599076725","https://openalex.org/W2763593805","https://openalex.org/W2964010366","https://openalex.org/W2995175577","https://openalex.org/W2996480032","https://openalex.org/W3012413426","https://openalex.org/W3111737151","https://openalex.org/W4280572991","https://openalex.org/W4281717669","https://openalex.org/W4313439128","https://openalex.org/W4393261948","https://openalex.org/W4394857110","https://openalex.org/W4410756485","https://openalex.org/W4412540120","https://openalex.org/W4414511202","https://openalex.org/W4415208343","https://openalex.org/W4416987411","https://openalex.org/W6922384979","https://openalex.org/W6960102814","https://openalex.org/W7126065435","https://openalex.org/W7140405555","https://openalex.org/W7159019255","https://openalex.org/W7159972703","https://openalex.org/W7161570775","https://openalex.org/W7203668761"],"related_works":[],"abstract_inverted_index":{"Abstract":[0],"Background":[1],"Temporal":[2],"representation":[3],"determines":[4],"which":[5],"features":[6],"of":[7,63,221],"routinely":[8],"recorded":[9,248],"vital":[10],"signs":[11],"are":[12],"available":[13],"for":[14,166,170,175,201,209],"analysis.":[15],"We":[16],"evaluated":[17,77],"changes":[18],"in":[19,42,74,78,98,162,183],"physiological":[20,112],"information":[21],"and":[22,40,69,76,94,140,173,203,226,239,283],"mortality":[23,263],"prediction":[24],"associated":[25],"with":[26,219],"different":[27],"representations":[28,97,255,282],"after":[29,50,117],"major":[30],"abdominal":[31],"surgery.":[32],"Methods":[33],"This":[34],"retrospective":[35,280],"study":[36],"included":[37,135,142],"adults":[38],"alive":[39],"still":[41],"the":[43,79,111,118,186],"intensive":[44],"care":[45],"unit":[46],"(ICU)":[47],"12":[48],"hours":[49],"admission.":[51,125],"Models":[52],"using":[53,103],"first-hour":[54],"snapshots,":[55,267],"12-hour":[56],"summaries,":[57],"or":[58],"post":[59],"hoc":[60],"same-window":[61,233,272],"medians":[62,273],"heart":[64],"rate,":[65],"mean":[66],"arterial":[67],"pressure,":[68],"oxygen":[70],"saturation":[71],"were":[72,192,256],"developed":[73],"MIMIC-IV":[75,134],"Salzburg":[80],"Intensive":[81],"Care":[82],"database":[83],"(SICdb)":[84],"without":[85],"refitting.":[86],"A":[87],"separate":[88],"within-SICdb":[89],"analysis":[90],"compared":[91],"5-,":[92],"15-,":[93],"60-minute":[95,181],"median-based":[96],"identical":[99],"densely":[100,148],"monitored":[101,149],"patients":[102,137,151,165],"common":[104],"cross-validation":[105],"folds.":[106],"Processed":[107],"one-minute":[108],"records":[109],"provided":[110],"reference.":[113],"Death":[114],"was":[115,237,242,274],"assessed":[116],"landmark":[119],"through":[120],"day":[121],"28":[122],"from":[123,253],"ICU":[124],"Performance":[126],"differences":[127,182,220],"used":[128],"patient-paired":[129],"bootstrap":[130],"confidence":[131,195],"intervals.":[132],"Results":[133],"1740":[136],"(168":[138],"deaths),":[139,153],"SICdb":[141,150],"2376":[143],"(185":[144],"deaths).":[145],"Among":[146],"2061":[147],"(151":[152],"hourly":[154],"aggregation":[155,246],"changed":[156,247],"positive":[157],"to":[158,199,207,230],"negative":[159],"abnormality":[160,249],"classification":[161],"392/1388":[163],"reference-positive":[164],"hypotension":[167],"(28.2%),":[168],"237/835":[169],"tachycardia":[171],"(28.4%),":[172],"468/671":[174],"desaturation":[176],"(69.7%).":[177],"Paired":[178],"5-minute":[179],"minus":[180],"area":[184],"under":[185],"receiver":[187],"operating":[188],"characteristic":[189],"curve":[190],"(AUROC)":[191],"0.007":[193],"(95%":[194],"interval":[196],"\u2212":[197],"0.001":[198,206],"0.016)":[200],"regression":[202,215],"0.019":[204],"(\u2212":[205,228],"0.041)":[208],"XGBoost.":[210],"In":[211],"external":[212],"evaluation,":[213],"full-summary":[214],"achieved":[216],"AUROC":[217,251],"0.779,":[218],"0.040":[222],"(0.019\u20130.063)":[223],"versus":[224,232],"snapshots":[225],"0.013":[227],"0.004":[229],"0.032)":[231],"medians.":[234],"External":[235],"calibration-in-the-large":[236],"0.243":[238],"calibration":[240],"slope":[241],"1.293.":[243],"Conclusions":[244],"Hourly":[245],"classifications.":[250],"gains":[252],"finer":[254],"not":[257,285],"clearly":[258],"established.":[259],"Twelve-hour":[260],"summaries":[261],"discriminated":[262],"better":[264],"than":[265],"admission":[266],"but":[268],"their":[269],"increment":[270],"over":[271],"uncertain":[275],"externally.":[276],"These":[277],"findings":[278],"describe":[279],"data":[281],"do":[284],"establish":[286],"a":[287],"preferred":[288],"bedside":[289],"monitoring":[290],"frequency.":[291]},"counts_by_year":[],"updated_date":"2026-11-12T12:28:57.059296","created_date":"2026-11-12T00:00:00"}
