{"id":"https://openalex.org/W7130516693","doi":"https://doi.org/10.7717/peerj.20865","title":"Serum docosahexaenoic acid as a predictor of hospital readmission in chronic obstructive pulmonary disease exacerbation: a retrospective cohort study","display_name":"Serum docosahexaenoic acid as a predictor of hospital readmission in chronic obstructive pulmonary disease exacerbation: a retrospective cohort study","publication_year":2026,"publication_date":"2026-02-19","ids":{"openalex":"https://openalex.org/W7130516693","doi":"https://doi.org/10.7717/peerj.20865","pmid":"https://pubmed.ncbi.nlm.nih.gov/41732720"},"language":"en","primary_location":{"id":"doi:10.7717/peerj.20865","doi":"https://doi.org/10.7717/peerj.20865","is_oa":true,"landing_page_url":"https://doi.org/10.7717/peerj.20865","pdf_url":null,"source":{"id":"https://openalex.org/S1983995261","display_name":"PeerJ","issn_l":"2167-8359","issn":["2167-8359"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","jufo-1","ki-jl-1","medline","norway-1"],"host_organization":"https://openalex.org/P4310320104","host_organization_name":"PeerJ, Inc.","host_organization_lineage":["https://openalex.org/P4310320104"],"host_organization_lineage_names":["PeerJ, Inc."],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"PeerJ","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref","doaj","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://doi.org/10.7717/peerj.20865","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5101379656","display_name":"Qiqiang Zhou","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210141942","display_name":"Peking University Third Hospital","ror":"https://ror.org/04wwqze12","country_code":"CN","type":"healthcare","lineage":["https://openalex.org/I4210141942"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Qiqiang Zhou","raw_affiliation_strings":["Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, China","institution_ids":["https://openalex.org/I4210141942"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5126365168","display_name":"Yating Wang","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210141942","display_name":"Peking University Third Hospital","ror":"https://ror.org/04wwqze12","country_code":"CN","type":"healthcare","lineage":["https://openalex.org/I4210141942"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yating Wang","raw_affiliation_strings":["Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, China","institution_ids":["https://openalex.org/I4210141942"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5146602365","display_name":"Chun Chang","orcid":"https://orcid.org/0000-0003-1362-5950","observed_orcids":["https://orcid.org/0000-0003-1362-5950"]},"institutions":[{"id":"https://openalex.org/I20231570","display_name":"Peking University","ror":"https://ror.org/02v51f717","country_code":"CN","type":"education","lineage":["https://openalex.org/I20231570"]},{"id":"https://openalex.org/I4210141942","display_name":"Peking University Third Hospital","ror":"https://ror.org/04wwqze12","country_code":"CN","type":"healthcare","lineage":["https://openalex.org/I4210141942"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Chun Chang","raw_affiliation_strings":["Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, China","Research Center for Chronic Airway Diseases, Peking University Health Science Center, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, China","institution_ids":["https://openalex.org/I4210141942"]},{"raw_affiliation_string":"Research Center for Chronic Airway Diseases, Peking University Health Science Center, Beijing, China","institution_ids":["https://openalex.org/I20231570"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5055857645","display_name":"Xiaoyan Gai","orcid":"https://orcid.org/0000-0002-3784-4317","observed_orcids":["https://orcid.org/0000-0002-3784-4317"]},"institutions":[{"id":"https://openalex.org/I20231570","display_name":"Peking University","ror":"https://ror.org/02v51f717","country_code":"CN","type":"education","lineage":["https://openalex.org/I20231570"]},{"id":"https://openalex.org/I4210141942","display_name":"Peking University Third Hospital","ror":"https://ror.org/04wwqze12","country_code":"CN","type":"healthcare","lineage":["https://openalex.org/I4210141942"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xiaoyan Gai","raw_affiliation_strings":["Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, China","Research Center for Chronic Airway Diseases, Peking University Health Science Center, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, China","institution_ids":["https://openalex.org/I4210141942"]},{"raw_affiliation_string":"Research Center for Chronic Airway Diseases, Peking University Health Science Center, Beijing, China","institution_ids":["https://openalex.org/I20231570"]}]},{"author_position":"middle","author":{"id":null,"display_name":"Yahong Chen","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I20231570","display_name":"Peking University","ror":"https://ror.org/02v51f717","country_code":"CN","type":"education","lineage":["https://openalex.org/I20231570"]},{"id":"https://openalex.org/I4210141942","display_name":"Peking University Third Hospital","ror":"https://ror.org/04wwqze12","country_code":"CN","type":"healthcare","lineage":["https://openalex.org/I4210141942"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yahong Chen","raw_affiliation_strings":["Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, China","Research Center for Chronic Airway Diseases, Peking University Health Science Center, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, China","institution_ids":["https://openalex.org/I4210141942"]},{"raw_affiliation_string":"Research Center for Chronic Airway Diseases, Peking University Health Science Center, Beijing, China","institution_ids":["https://openalex.org/I20231570"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5123449805","display_name":"Ying Liang","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I20231570","display_name":"Peking University","ror":"https://ror.org/02v51f717","country_code":"CN","type":"education","lineage":["https://openalex.org/I20231570"]},{"id":"https://openalex.org/I4210141942","display_name":"Peking University Third Hospital","ror":"https://ror.org/04wwqze12","country_code":"CN","type":"healthcare","lineage":["https://openalex.org/I4210141942"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Ying Liang","raw_affiliation_strings":["Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, China","Research Center for Chronic Airway Diseases, Peking University Health Science Center, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, China","institution_ids":["https://openalex.org/I4210141942"]},{"raw_affiliation_string":"Research Center for Chronic Airway Diseases, Peking University Health Science Center, Beijing, China","institution_ids":["https://openalex.org/I20231570"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5012052127","display_name":"Yongchang Sun","orcid":"https://orcid.org/0000-0003-3281-8854","observed_orcids":["https://orcid.org/0000-0003-3281-8854"]},"institutions":[{"id":"https://openalex.org/I20231570","display_name":"Peking University","ror":"https://ror.org/02v51f717","country_code":"CN","type":"education","lineage":["https://openalex.org/I20231570"]},{"id":"https://openalex.org/I4210141942","display_name":"Peking University Third Hospital","ror":"https://ror.org/04wwqze12","country_code":"CN","type":"healthcare","lineage":["https://openalex.org/I4210141942"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yongchang Sun","raw_affiliation_strings":["Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, China","Research Center for Chronic Airway Diseases, Peking University Health Science Center, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Respiratory and Critical Care Medicine, Peking University Third Hospital, Beijing, China","institution_ids":["https://openalex.org/I4210141942"]},{"raw_affiliation_string":"Research Center for Chronic Airway Diseases, Peking University Health Science Center, Beijing, China","institution_ids":["https://openalex.org/I20231570"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":1395,"currency":"USD","value_usd":1395},"apc_paid":{"value":1395,"currency":"USD","value_usd":1395},"fwci":4.6178,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.90635931,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":93,"max":96},"biblio":{"volume":"14","issue":null,"first_page":"e20865","last_page":"e20865"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10143","display_name":"Chronic Obstructive Pulmonary Disease (COPD) Research","score":0.9814000129699707,"subfield":{"id":"https://openalex.org/subfields/2740","display_name":"Pulmonary and Respiratory Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T10143","display_name":"Chronic Obstructive Pulmonary Disease (COPD) Research","score":0.9814000129699707,"subfield":{"id":"https://openalex.org/subfields/2740","display_name":"Pulmonary and Respiratory 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/T10387","display_name":"Fatty Acid Research and Health","score":0.013000000268220901,"subfield":{"id":"https://openalex.org/subfields/2916","display_name":"Nutrition and Dietetics"},"field":{"id":"https://openalex.org/fields/29","display_name":"Nursing"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10051","display_name":"Asthma and respiratory diseases","score":0.002300000051036477,"subfield":{"id":"https://openalex.org/subfields/2737","display_name":"Physiology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/chronic-obstructive-pulmonary-disease","display_name":"chronic obstructive pulmonary disease","score":0.8809999823570251},{"id":"https://openalex.org/keywords/acute-exacerbation-of-copd","display_name":"COPD exacerbations","score":0.9629999995231628},{"id":"https://openalex.org/keywords/hospital-readmission","display_name":"hospital readmission","score":0.9129999876022339},{"id":"https://openalex.org/keywords/docosahexaenoic-acid","display_name":"docosahexaenoic acid","score":0.9950000047683716},{"id":"https://openalex.org/keywords/omega-3-fatty-acids","display_name":"omega-3 fatty acids","score":0.953000009059906},{"id":"https://openalex.org/keywords/eicosapentaenoic-acid","display_name":"eicosapentaenoic acid","score":0.9900000095367432},{"id":"https://openalex.org/keywords/serum-lipid-biomarkers","display_name":"serum lipid biomarkers","score":0.8029999732971191},{"id":"https://openalex.org/keywords/risk-prediction","display_name":"risk prediction","score":0.8550000190734863},{"id":"https://openalex.org/keywords/nomogram","display_name":"nomogram","score":0.8190000057220459},{"id":"https://openalex.org/keywords/omega-3-fatty-acid-deficiency","display_name":"omega-3 deficiency","score":0.5669999718666077}],"concepts":[{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.9101999998092651},{"id":"https://openalex.org/C167135981","wikidata":"https://www.wikidata.org/wiki/Q2146302","display_name":"Retrospective cohort study","level":2,"score":0.8378000259399414},{"id":"https://openalex.org/C2776644030","wikidata":"https://www.wikidata.org/wiki/Q25324519","display_name":"Hospital readmission","level":2,"score":0.6693000197410583},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.6676999926567078},{"id":"https://openalex.org/C2992779976","wikidata":"https://www.wikidata.org/wiki/Q3286546","display_name":"Pulmonary disease","level":2,"score":0.6092000007629395},{"id":"https://openalex.org/C2777171753","wikidata":"https://www.wikidata.org/wiki/Q423345","display_name":"Docosahexaenoic acid","level":4,"score":0.5922999978065491},{"id":"https://openalex.org/C2777014857","wikidata":"https://www.wikidata.org/wiki/Q1383410","display_name":"Exacerbation","level":2,"score":0.5455999970436096},{"id":"https://openalex.org/C50440223","wikidata":"https://www.wikidata.org/wiki/Q1475848","display_name":"Risk factor","level":2,"score":0.4848000109195709},{"id":"https://openalex.org/C2776780178","wikidata":"https://www.wikidata.org/wiki/Q199804","display_name":"COPD","level":2,"score":0.4415000081062317},{"id":"https://openalex.org/C201903717","wikidata":"https://www.wikidata.org/wiki/Q1778788","display_name":"Cohort study","level":2,"score":0.4198000133037567},{"id":"https://openalex.org/C2780861865","wikidata":"https://www.wikidata.org/wiki/Q4677923","display_name":"Acute exacerbation of chronic obstructive pulmonary disease","level":3,"score":0.37139999866485596},{"id":"https://openalex.org/C30036603","wikidata":"https://www.wikidata.org/wiki/Q17125150","display_name":"Severity of illness","level":2,"score":0.3411000072956085},{"id":"https://openalex.org/C177713679","wikidata":"https://www.wikidata.org/wiki/Q679690","display_name":"Intensive care medicine","level":1,"score":0.3411000072956085},{"id":"https://openalex.org/C2779134260","wikidata":"https://www.wikidata.org/wiki/Q12136","display_name":"Disease","level":2,"score":0.3370000123977661},{"id":"https://openalex.org/C2779159551","wikidata":"https://www.wikidata.org/wiki/Q1414874","display_name":"Comorbidity","level":2,"score":0.31119999289512634},{"id":"https://openalex.org/C72563966","wikidata":"https://www.wikidata.org/wiki/Q1303415","display_name":"Cohort","level":2,"score":0.3073999881744385},{"id":"https://openalex.org/C3019871722","wikidata":"https://www.wikidata.org/wiki/Q718944","display_name":"Hospital admission","level":2,"score":0.3070000112056732},{"id":"https://openalex.org/C194828623","wikidata":"https://www.wikidata.org/wiki/Q2861470","display_name":"Emergency medicine","level":1,"score":0.30379998683929443},{"id":"https://openalex.org/C77350462","wikidata":"https://www.wikidata.org/wiki/Q1125472","display_name":"Confounding","level":2,"score":0.27410000562667847},{"id":"https://openalex.org/C146304588","wikidata":"https://www.wikidata.org/wiki/Q961652","display_name":"Case-control study","level":2,"score":0.2533999979496002},{"id":"https://openalex.org/C50382708","wikidata":"https://www.wikidata.org/wiki/Q223218","display_name":"Proportional hazards model","level":2,"score":0.2533000111579895}],"mesh":[{"descriptor_ui":"D000368","descriptor_name":"Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000368","descriptor_name":"Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000368","descriptor_name":"Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000368","descriptor_name":"Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000368","descriptor_name":"Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D004281","descriptor_name":"Docosahexaenoic Acids","qualifier_ui":"Q000097","qualifier_name":"blood","is_major_topic":true},{"descriptor_ui":"D004281","descriptor_name":"Docosahexaenoic Acids","qualifier_ui":"Q000097","qualifier_name":"blood","is_major_topic":true},{"descriptor_ui":"D004281","descriptor_name":"Docosahexaenoic Acids","qualifier_ui":"Q000097","qualifier_name":"blood","is_major_topic":true},{"descriptor_ui":"D004281","descriptor_name":"Docosahexaenoic Acids","qualifier_ui":"Q000097","qualifier_name":"blood","is_major_topic":true},{"descriptor_ui":"D004281","descriptor_name":"Docosahexaenoic Acids","qualifier_ui":"Q000097","qualifier_name":"blood","is_major_topic":true},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"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":"D006801","descriptor_name":"Humans","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":"D006801","descriptor_name":"Humans","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":"D008297","descriptor_name":"Male","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":"D008297","descriptor_name":"Male","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":"D008875","descriptor_name":"Middle Aged","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":"D008875","descriptor_name":"Middle Aged","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":"D010359","descriptor_name":"Patient Readmission","qualifier_ui":"Q000706","qualifier_name":"statistics & numerical data","is_major_topic":true},{"descriptor_ui":"D010359","descriptor_name":"Patient Readmission","qualifier_ui":"Q000706","qualifier_name":"statistics & numerical data","is_major_topic":true},{"descriptor_ui":"D010359","descriptor_name":"Patient Readmission","qualifier_ui":"Q000706","qualifier_name":"statistics & numerical data","is_major_topic":true},{"descriptor_ui":"D010359","descriptor_name":"Patient Readmission","qualifier_ui":"Q000706","qualifier_name":"statistics & numerical data","is_major_topic":true},{"descriptor_ui":"D010359","descriptor_name":"Patient Readmission","qualifier_ui":"Q000706","qualifier_name":"statistics & numerical data","is_major_topic":true},{"descriptor_ui":"D012189","descriptor_name":"Retrospective Studies","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012189","descriptor_name":"Retrospective Studies","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012189","descriptor_name":"Retrospective Studies","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012189","descriptor_name":"Retrospective Studies","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012189","descriptor_name":"Retrospective Studies","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012307","descriptor_name":"Risk Factors","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012307","descriptor_name":"Risk Factors","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012307","descriptor_name":"Risk Factors","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012307","descriptor_name":"Risk Factors","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012307","descriptor_name":"Risk Factors","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D015118","descriptor_name":"Eicosapentaenoic Acid","qualifier_ui":"Q000097","qualifier_name":"blood","is_major_topic":false},{"descriptor_ui":"D015118","descriptor_name":"Eicosapentaenoic Acid","qualifier_ui":"Q000097","qualifier_name":"blood","is_major_topic":false},{"descriptor_ui":"D015118","descriptor_name":"Eicosapentaenoic Acid","qualifier_ui":"Q000097","qualifier_name":"blood","is_major_topic":false},{"descriptor_ui":"D015415","descriptor_name":"Biomarkers","qualifier_ui":"Q000097","qualifier_name":"blood","is_major_topic":false},{"descriptor_ui":"D015415","descriptor_name":"Biomarkers","qualifier_ui":"Q000097","qualifier_name":"blood","is_major_topic":false},{"descriptor_ui":"D015415","descriptor_name":"Biomarkers","qualifier_ui":"Q000097","qualifier_name":"blood","is_major_topic":false},{"descriptor_ui":"D018450","descriptor_name":"Disease Progression","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D018450","descriptor_name":"Disease Progression","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D018450","descriptor_name":"Disease Progression","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D018450","descriptor_name":"Disease Progression","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D018450","descriptor_name":"Disease Progression","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D029424","descriptor_name":"Pulmonary Disease, Chronic Obstructive","qualifier_ui":"Q000097","qualifier_name":"blood","is_major_topic":true},{"descriptor_ui":"D029424","descriptor_name":"Pulmonary Disease, Chronic Obstructive","qualifier_ui":"Q000097","qualifier_name":"blood","is_major_topic":true},{"descriptor_ui":"D029424","descriptor_name":"Pulmonary Disease, Chronic Obstructive","qualifier_ui":"Q000097","qualifier_name":"blood","is_major_topic":true},{"descriptor_ui":"D029424","descriptor_name":"Pulmonary Disease, Chronic Obstructive","qualifier_ui":"Q000097","qualifier_name":"blood","is_major_topic":true},{"descriptor_ui":"D029424","descriptor_name":"Pulmonary Disease, Chronic Obstructive","qualifier_ui":"Q000097","qualifier_name":"blood","is_major_topic":true}],"locations_count":4,"locations":[{"id":"doi:10.7717/peerj.20865","doi":"https://doi.org/10.7717/peerj.20865","is_oa":true,"landing_page_url":"https://doi.org/10.7717/peerj.20865","pdf_url":null,"source":{"id":"https://openalex.org/S1983995261","display_name":"PeerJ","issn_l":"2167-8359","issn":["2167-8359"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","jufo-1","ki-jl-1","medline","norway-1"],"host_organization":"https://openalex.org/P4310320104","host_organization_name":"PeerJ, Inc.","host_organization_lineage":["https://openalex.org/P4310320104"],"host_organization_lineage_names":["PeerJ, Inc."],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"PeerJ","raw_type":"journal-article"},{"id":"pmid:41732720","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/41732720","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":"PeerJ","raw_type":"Journal Article"},{"id":"pmh:oai:doaj.org/article:bc63b52a7a484c85be53727c2bb5ce0a","doi":null,"is_oa":true,"landing_page_url":"https://doaj.org/article/bc63b52a7a484c85be53727c2bb5ce0a","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","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-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"PeerJ, Vol 14, p e20865 (2026)","raw_type":"article"},{"id":"pmh:oai:pubmedcentral.nih.gov:12925419","doi":null,"is_oa":true,"landing_page_url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC12925419/","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"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":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"PeerJ","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.7717/peerj.20865","doi":"https://doi.org/10.7717/peerj.20865","is_oa":true,"landing_page_url":"https://doi.org/10.7717/peerj.20865","pdf_url":null,"source":{"id":"https://openalex.org/S1983995261","display_name":"PeerJ","issn_l":"2167-8359","issn":["2167-8359"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","jufo-1","ki-jl-1","medline","norway-1"],"host_organization":"https://openalex.org/P4310320104","host_organization_name":"PeerJ, Inc.","host_organization_lineage":["https://openalex.org/P4310320104"],"host_organization_lineage_names":["PeerJ, Inc."],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"PeerJ","raw_type":"journal-article"},"sustainable_development_goals":[{"score":1.0,"display_name":"Good health and well-being","id":"https://metadata.un.org/sdg/3"}],"sustainable_development_goals_aurora":[{"score":0.7399563193321228,"display_name":"Good health and well-being","id":"https://metadata.un.org/sdg/3"}],"study_designs":[{"display_name":"Observational Study","id":"https://openalex.org/study-designs/observational-study"}],"awards":[{"id":"https://openalex.org/G8431599771","display_name":null,"funder_award_id":"No. 81700039, No. 82090014","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":31,"referenced_works":["https://openalex.org/W1765977332","https://openalex.org/W1965862880","https://openalex.org/W1975997092","https://openalex.org/W1982588431","https://openalex.org/W1988709642","https://openalex.org/W1989335494","https://openalex.org/W2010967671","https://openalex.org/W2024457821","https://openalex.org/W2031979684","https://openalex.org/W2044359338","https://openalex.org/W2094236361","https://openalex.org/W2103258141","https://openalex.org/W2110309188","https://openalex.org/W2110498564","https://openalex.org/W2149849734","https://openalex.org/W2154692607","https://openalex.org/W2164541899","https://openalex.org/W2169973614","https://openalex.org/W2173752774","https://openalex.org/W2409468403","https://openalex.org/W2517461385","https://openalex.org/W2521632384","https://openalex.org/W2890249169","https://openalex.org/W2969018727","https://openalex.org/W2972515186","https://openalex.org/W3024841775","https://openalex.org/W3081569835","https://openalex.org/W3171122508","https://openalex.org/W4384820180","https://openalex.org/W4399696631","https://openalex.org/W4408245797"],"related_works":[],"abstract_inverted_index":{"Background":[0],"The":[1,132,217],"beneficial":[2],"effects":[3],"of":[4,33,61,113,138,208,220,307],"omega-3":[5,34,51,93,139],"fatty":[6,35,52,94,140],"acids":[7,36],"for":[8,79,109,268,292],"patients":[9,77,105,158,232,310],"with":[10,57,311],"chronic":[11],"obstructive":[12],"pulmonary":[13],"disease":[14],"(COPD)":[15],"had":[16,204],"been":[17],"observed,":[18],"including":[19,143],"attenuating":[20],"lung":[21],"function":[22],"decline":[23],"and":[24,84,91,116,135,147,163,173,179],"reducing":[25],"their":[26],"respiratory":[27],"symptom":[28],"burdens.":[29],"However,":[30],"the":[31,129,152,169,174,197,234,248,305],"impact":[32],"on":[37,122,168,274],"COPD":[38,67],"exacerbation-related":[39],"outcomes":[40],"remains":[41],"unclear.":[42],"This":[43,71],"study":[44,74],"aimed":[45],"to":[46,66,245,303],"evaluate":[47],"whether":[48,123],"reduced":[49],"serum":[50,92,136,206,218],"acid":[53,95,141,145,149],"levels":[54,96,137,207,219,276],"are":[55],"associated":[56],"a":[58,110,186,238,299],"higher":[59,240],"risk":[60,266,290,306],"future":[62],"hospital":[63],"readmission":[64,127,181,195,242],"due":[65],"exacerbation":[68,308],"(ECOPD).":[69],"Methods":[70],"retrospective":[72],"cohort":[73],"included":[75],"88":[76],"hospitalized":[78],"ECOPD":[80],"between":[81,151,176,226],"April":[82],"2017":[83],"March":[85],"2018.":[86],"Clinical":[87],"data":[88],"were":[89,97,106,155,159],"collected,":[90],"analyzed":[98,184],"using":[99,185],"liquid":[100],"chromatography-mass":[101],"spectrometry":[102],"(LC-MS).":[103],"All":[104],"followed":[107],"up":[108],"median":[111,170],"period":[112,199],"53.5":[114],"months":[115],"categorized":[117,160],"into":[118,161],"two":[119,153],"groups":[120,154,166],"based":[121,167,273],"they":[124],"experienced":[125,193],"ECOPD-related":[126,180,194,241,269,293],"during":[128,196],"follow-up":[130,198],"period.":[131],"clinical":[133],"characteristics":[134],"levels,":[142],"docosahexaenoic":[144],"(DHA)":[146],"eicosapentaenoic":[148],"(EPA),":[150],"compared.":[156],"Additionally,":[157],"low":[162,260,283],"high":[164],"DHA":[165,171,177,209,261,275,284,296],"level,":[172],"association":[175],"level":[178,262,285],"rate":[182,243],"was":[183],"Cox":[187,256],"regression":[188,257],"model.":[189],"Result":[190],"Patients":[191],"who":[192,212],"(":[200],"n":[201],"=":[202,253],"36)":[203],"lower":[205],"than":[210],"those":[211,246],"did":[213,222],"not":[214,223],"experience":[215],"readmission.":[216,270],"EPA":[221],"significantly":[224,239],"differ":[225],"groups.":[227],"Kaplan\u2013Meier":[228],"curve":[229],"showed":[230],"that":[231],"in":[233,247,309],"low-DHA":[235],"group":[236,250],"exhibited":[237],"compared":[244],"high-DHA":[249],"(log-rank":[251],"p":[252],"0.023).":[254],"Multivariable":[255],"analysis":[258],"identified":[259],"as":[263,287],"an":[264,288],"independent":[265,289],"factor":[267,291],"A":[271,282],"nomogram":[272],"demonstrated":[277],"good":[278],"predictive":[279],"performance.":[280],"Conclusion":[281],"serves":[286],"readmission,":[294],"suggesting":[295],"may":[297],"have":[298],"potential":[300],"protective":[301],"effect":[302],"reduce":[304],"COPD.":[312]},"counts_by_year":[{"year":2026,"cited_by_count":1}],"updated_date":"2026-09-27T08:07:27.782135","created_date":"2026-02-19T00:00:00"}
