{"id":"https://openalex.org/W2885616319","doi":"https://doi.org/10.1371/journal.pone.0201799","title":"Clinical characteristics and prognostic factors of pneumonia in patients with and without rheumatoid arthritis","display_name":"Clinical characteristics and prognostic factors of pneumonia in patients with and without rheumatoid arthritis","publication_year":2018,"publication_date":"2018-08-03","ids":{"openalex":"https://openalex.org/W2885616319","doi":"https://doi.org/10.1371/journal.pone.0201799","mag":"2885616319","pmid":"https://pubmed.ncbi.nlm.nih.gov/30075013","pmcid":"https://www.ncbi.nlm.nih.gov/pmc/articles/6075779"},"language":"en","primary_location":{"id":"doi:10.1371/journal.pone.0201799","doi":"https://doi.org/10.1371/journal.pone.0201799","is_oa":true,"landing_page_url":"https://doi.org/10.1371/journal.pone.0201799","pdf_url":"https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0201799&type=printable","source":{"id":"https://openalex.org/S202381698","display_name":"PLoS ONE","issn_l":"1932-6203","issn":["1932-6203"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","doaj","dongbi-c","doyens","erih-plus","jufo-1","ki-jl-1","medline","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310315706","host_organization_name":"Public Library of Science","host_organization_lineage":["https://openalex.org/P4310315706"],"host_organization_lineage_names":["Public Library of Science"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"PLOS ONE","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","doaj","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0201799&type=printable","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5042215732","display_name":"Aya Wakabayashi","orcid":"https://orcid.org/0000-0002-3489-2970","observed_orcids":["https://orcid.org/0000-0002-3489-2970"]},"institutions":[{"id":"https://openalex.org/I4405270784","display_name":"Saitama Cardiovascular and Respiratory Center","ror":"https://ror.org/01an3wk58","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4405270784"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Aya Wakabayashi","raw_affiliation_strings":["Department of Respiratory Medicine, Saitama Cardiovascular and Respiratory Center, Kumagaya, Saitama, Japan"],"raw_orcid":"https://orcid.org/0000-0002-3489-2970","affiliations":[{"raw_affiliation_string":"Department of Respiratory Medicine, Saitama Cardiovascular and Respiratory Center, Kumagaya, Saitama, Japan","institution_ids":["https://openalex.org/I4405270784"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5081521137","display_name":"Takashi Ishiguro","orcid":"https://orcid.org/0000-0001-6004-1769","observed_orcids":["https://orcid.org/0000-0001-6004-1769"]},"institutions":[{"id":"https://openalex.org/I4405270784","display_name":"Saitama Cardiovascular and Respiratory Center","ror":"https://ror.org/01an3wk58","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4405270784"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takashi Ishiguro","raw_affiliation_strings":["Department of Respiratory Medicine, Saitama Cardiovascular and Respiratory Center, Kumagaya, Saitama, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Respiratory Medicine, Saitama Cardiovascular and Respiratory Center, Kumagaya, Saitama, Japan","institution_ids":["https://openalex.org/I4405270784"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5001635046","display_name":"Yotaro Takaku","orcid":"https://orcid.org/0000-0002-6431-192X","observed_orcids":["https://orcid.org/0000-0002-6431-192X"]},"institutions":[{"id":"https://openalex.org/I4405270784","display_name":"Saitama Cardiovascular and Respiratory Center","ror":"https://ror.org/01an3wk58","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4405270784"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yotaro Takaku","raw_affiliation_strings":["Department of Respiratory Medicine, Saitama Cardiovascular and Respiratory Center, Kumagaya, Saitama, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Respiratory Medicine, Saitama Cardiovascular and Respiratory Center, Kumagaya, Saitama, Japan","institution_ids":["https://openalex.org/I4405270784"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5110783988","display_name":"Yosuke Miyahara","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4405270784","display_name":"Saitama Cardiovascular and Respiratory Center","ror":"https://ror.org/01an3wk58","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4405270784"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yosuke Miyahara","raw_affiliation_strings":["Department of Respiratory Medicine, Saitama Cardiovascular and Respiratory Center, Kumagaya, Saitama, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Respiratory Medicine, Saitama Cardiovascular and Respiratory Center, Kumagaya, Saitama, Japan","institution_ids":["https://openalex.org/I4405270784"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5017905378","display_name":"Naho Kagiyama","orcid":"https://orcid.org/0000-0002-9498-0817","observed_orcids":["https://orcid.org/0000-0002-9498-0817"]},"institutions":[{"id":"https://openalex.org/I4405270784","display_name":"Saitama Cardiovascular and Respiratory Center","ror":"https://ror.org/01an3wk58","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4405270784"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Naho Kagiyama","raw_affiliation_strings":["Department of Respiratory Medicine, Saitama Cardiovascular and Respiratory Center, Kumagaya, Saitama, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Respiratory Medicine, Saitama Cardiovascular and Respiratory Center, Kumagaya, Saitama, Japan","institution_ids":["https://openalex.org/I4405270784"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5004087488","display_name":"Noboru Takayanagi","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4405270784","display_name":"Saitama Cardiovascular and Respiratory Center","ror":"https://ror.org/01an3wk58","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4405270784"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Noboru Takayanagi","raw_affiliation_strings":["Department of Respiratory Medicine, Saitama Cardiovascular and Respiratory Center, Kumagaya, Saitama, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Respiratory Medicine, Saitama Cardiovascular and Respiratory Center, Kumagaya, Saitama, Japan","institution_ids":["https://openalex.org/I4405270784"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5042215732"],"corresponding_institution_ids":["https://openalex.org/I4405270784"],"apc_list":{"value":2382,"currency":"USD","value_usd":2382},"apc_paid":{"value":2382,"currency":"USD","value_usd":2382},"fwci":1.8758,"has_fulltext":true,"cited_by_count":26,"citation_normalized_percentile":{"value":0.84802174,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":99},"biblio":{"volume":"13","issue":"8","first_page":"e0201799","last_page":"e0201799"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10654","display_name":"Pneumonia and Respiratory Infections","score":0.8935999870300293,"subfield":{"id":"https://openalex.org/subfields/2713","display_name":"Epidemiology"},"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/T10654","display_name":"Pneumonia and Respiratory Infections","score":0.8935999870300293,"subfield":{"id":"https://openalex.org/subfields/2713","display_name":"Epidemiology"},"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/T10200","display_name":"Rheumatoid Arthritis Research and Therapies","score":0.09279999881982803,"subfield":{"id":"https://openalex.org/subfields/2745","display_name":"Rheumatology"},"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/T11153","display_name":"Streptococcal Infections and Treatments","score":0.002899999963119626,"subfield":{"id":"https://openalex.org/subfields/2725","display_name":"Infectious Diseases"},"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/pneumonia","display_name":"pneumonia","score":0.8629999756813049},{"id":"https://openalex.org/keywords/rheumatoid-arthritis","display_name":"rheumatoid arthritis","score":1.0},{"id":"https://openalex.org/keywords/pneumonia-mortality","display_name":"pneumonia mortality","score":0.7609999775886536},{"id":"https://openalex.org/keywords/prognostic-factors","display_name":"prognostic factors","score":0.859000027179718},{"id":"https://openalex.org/keywords/pseudomonas-aeruginosa","display_name":"Pseudomonas aeruginosa","score":0.8330000042915344},{"id":"https://openalex.org/keywords/haemophilus-influenzae","display_name":"Haemophilus influenzae","score":0.9990000128746033},{"id":"https://openalex.org/keywords/mycoplasma-catarrhalis","display_name":"Mycoplasma catarrhalis","score":0.9459999799728394},{"id":"https://openalex.org/keywords/coinfection","display_name":"co-infection","score":0.9800000190734863},{"id":"https://openalex.org/keywords/bacterial-etiology","display_name":"bacterial etiology","score":0.5720000267028809},{"id":"https://openalex.org/keywords/influenza-virus","display_name":"influenza virus","score":0.7620000243186951},{"id":"https://openalex.org/keywords/streptococcus-pneumoniae","display_name":"Streptococcus pneumoniae","score":0.9390000104904175},{"id":"https://openalex.org/keywords/respiratory-comorbidities","display_name":"respiratory comorbidities","score":0.7360000014305115},{"id":"https://openalex.org/keywords/smoking","display_name":"smoking","score":0.5419999957084656}],"concepts":[{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.7922254204750061},{"id":"https://openalex.org/C2777914695","wikidata":"https://www.wikidata.org/wiki/Q12192","display_name":"Pneumonia","level":2,"score":0.7291287183761597},{"id":"https://openalex.org/C2776551000","wikidata":"https://www.wikidata.org/wiki/Q2046669","display_name":"Moraxella catarrhalis","level":4,"score":0.7272146344184875},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.6934226751327515},{"id":"https://openalex.org/C2781253189","wikidata":"https://www.wikidata.org/wiki/Q221179","display_name":"Streptococcus pneumoniae","level":3,"score":0.6751702427864075},{"id":"https://openalex.org/C2777575956","wikidata":"https://www.wikidata.org/wiki/Q187255","display_name":"Rheumatoid arthritis","level":2,"score":0.6110939383506775},{"id":"https://openalex.org/C2776925733","wikidata":"https://www.wikidata.org/wiki/Q1141979","display_name":"Haemophilus influenzae","level":3,"score":0.6002160310745239},{"id":"https://openalex.org/C2779215961","wikidata":"https://www.wikidata.org/wiki/Q310904","display_name":"Mycoplasma pneumoniae","level":3,"score":0.540532112121582},{"id":"https://openalex.org/C50440223","wikidata":"https://www.wikidata.org/wiki/Q1475848","display_name":"Risk factor","level":2,"score":0.5352431535720825},{"id":"https://openalex.org/C137627325","wikidata":"https://www.wikidata.org/wiki/Q156318","display_name":"Etiology","level":2,"score":0.45805585384368896},{"id":"https://openalex.org/C2776232647","wikidata":"https://www.wikidata.org/wiki/Q702883","display_name":"Rheumatoid factor","level":3,"score":0.4271467924118042},{"id":"https://openalex.org/C203014093","wikidata":"https://www.wikidata.org/wiki/Q101929","display_name":"Immunology","level":1,"score":0.37351247668266296},{"id":"https://openalex.org/C90924648","wikidata":"https://www.wikidata.org/wiki/Q120569","display_name":"Gastroenterology","level":1,"score":0.33654525876045227},{"id":"https://openalex.org/C89423630","wikidata":"https://www.wikidata.org/wiki/Q7193","display_name":"Microbiology","level":1,"score":0.09834790229797363},{"id":"https://openalex.org/C501593827","wikidata":"https://www.wikidata.org/wiki/Q12187","display_name":"Antibiotics","level":2,"score":0.09803804755210876},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.08544930815696716}],"mesh":[{"descriptor_ui":"D000368","descriptor_name":"Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D001172","descriptor_name":"Arthritis, Rheumatoid","qualifier_ui":"Q000150","qualifier_name":"complications","is_major_topic":true},{"descriptor_ui":"D001172","descriptor_name":"Arthritis, Rheumatoid","qualifier_ui":"Q000175","qualifier_name":"diagnosis","is_major_topic":false},{"descriptor_ui":"D001172","descriptor_name":"Arthritis, Rheumatoid","qualifier_ui":"Q000401","qualifier_name":"mortality","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":"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":"D011014","descriptor_name":"Pneumonia","qualifier_ui":"Q000150","qualifier_name":"complications","is_major_topic":false},{"descriptor_ui":"D011014","descriptor_name":"Pneumonia","qualifier_ui":"Q000175","qualifier_name":"diagnosis","is_major_topic":true},{"descriptor_ui":"D011014","descriptor_name":"Pneumonia","qualifier_ui":"Q000382","qualifier_name":"microbiology","is_major_topic":false},{"descriptor_ui":"D011014","descriptor_name":"Pneumonia","qualifier_ui":"Q000401","qualifier_name":"mortality","is_major_topic":true},{"descriptor_ui":"D011379","descriptor_name":"Prognosis","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":"D012907","descriptor_name":"Smoking","qualifier_ui":"Q000453","qualifier_name":"epidemiology","is_major_topic":false},{"descriptor_ui":"D015897","descriptor_name":"Comorbidity","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D060085","descriptor_name":"Coinfection","qualifier_ui":"Q000150","qualifier_name":"complications","is_major_topic":false},{"descriptor_ui":"D060085","descriptor_name":"Coinfection","qualifier_ui":"Q000175","qualifier_name":"diagnosis","is_major_topic":false},{"descriptor_ui":"D060085","descriptor_name":"Coinfection","qualifier_ui":"Q000382","qualifier_name":"microbiology","is_major_topic":false},{"descriptor_ui":"D060085","descriptor_name":"Coinfection","qualifier_ui":"Q000401","qualifier_name":"mortality","is_major_topic":false}],"locations_count":5,"locations":[{"id":"doi:10.1371/journal.pone.0201799","doi":"https://doi.org/10.1371/journal.pone.0201799","is_oa":true,"landing_page_url":"https://doi.org/10.1371/journal.pone.0201799","pdf_url":"https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0201799&type=printable","source":{"id":"https://openalex.org/S202381698","display_name":"PLoS ONE","issn_l":"1932-6203","issn":["1932-6203"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","doaj","dongbi-c","doyens","erih-plus","jufo-1","ki-jl-1","medline","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310315706","host_organization_name":"Public Library of Science","host_organization_lineage":["https://openalex.org/P4310315706"],"host_organization_lineage_names":["Public Library of Science"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"PLOS ONE","raw_type":"journal-article"},{"id":"pmh:oai:europepmc.org:5053552","doi":null,"is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/6075779","pdf_url":null,"source":{"id":"https://openalex.org/S4306400806","display_name":"Europe PMC (PubMed Central)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1303153112","host_organization_name":"European Bioinformatics Institute","host_organization_lineage":["https://openalex.org/I1303153112"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":null,"raw_type":"Text"},{"id":"pmh:oai:pubmedcentral.nih.gov:6075779","doi":null,"is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/6075779","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":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"PLoS One","raw_type":"Text"},{"id":"pmid:30075013","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/30075013","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":"PloS one","raw_type":"Journal Article"},{"id":"pmh:oai:doaj.org/article:f69eaf855bf6430898b27a8dd931cf41","doi":null,"is_oa":true,"landing_page_url":"https://doaj.org/article/f69eaf855bf6430898b27a8dd931cf41","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":"PLoS ONE, Vol 13, Iss 8, p e0201799 (2018)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1371/journal.pone.0201799","doi":"https://doi.org/10.1371/journal.pone.0201799","is_oa":true,"landing_page_url":"https://doi.org/10.1371/journal.pone.0201799","pdf_url":"https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0201799&type=printable","source":{"id":"https://openalex.org/S202381698","display_name":"PLoS ONE","issn_l":"1932-6203","issn":["1932-6203"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","doaj","dongbi-c","doyens","erih-plus","jufo-1","ki-jl-1","medline","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310315706","host_organization_name":"Public Library of Science","host_organization_lineage":["https://openalex.org/P4310315706"],"host_organization_lineage_names":["Public Library of Science"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"PLOS ONE","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/3","score":1.0,"display_name":"Good health and well-being"}],"study_designs":[{"id":"https://openalex.org/study-designs/observational-study","display_name":"Observational Study"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320317233","display_name":"Saitama Cardiovascular and Respiratory Center","ror":"https://ror.org/01an3wk58"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2885616319.pdf","grobid_xml":"https://content.openalex.org/works/W2885616319.grobid-xml"},"referenced_works_count":23,"referenced_works":["https://openalex.org/W1856173259","https://openalex.org/W1973946708","https://openalex.org/W2001107080","https://openalex.org/W2025801690","https://openalex.org/W2026732514","https://openalex.org/W2032546353","https://openalex.org/W2059074535","https://openalex.org/W2065419533","https://openalex.org/W2073631008","https://openalex.org/W2081261736","https://openalex.org/W2085947993","https://openalex.org/W2089029145","https://openalex.org/W2091721419","https://openalex.org/W2106799757","https://openalex.org/W2133979383","https://openalex.org/W2134374416","https://openalex.org/W2149899765","https://openalex.org/W2152348310","https://openalex.org/W2271616951","https://openalex.org/W2345521979","https://openalex.org/W2471717831","https://openalex.org/W2517807650","https://openalex.org/W4211194064"],"related_works":["https://openalex.org/W3190398035","https://openalex.org/W3005237557","https://openalex.org/W4289544424","https://openalex.org/W2131652244","https://openalex.org/W4414515915","https://openalex.org/W7160012747","https://openalex.org/W2766861362","https://openalex.org/W4225390773","https://openalex.org/W4401180058","https://openalex.org/W4393276569"],"abstract_inverted_index":{"BACKGROUND:":[0],"To":[1],"elucidate":[2],"the":[3,44,49,102,117,164,171,179,187,223],"characteristics":[4],"of":[5,114,134,173,220],"pneumonia":[6,16,30,72,115,135,174,221],"in":[7,17,23,101,116,136,163,186,222],"rheumatoid":[8],"arthritis":[9],"(RA)":[10],"patients":[11,19,31,70,104,119,138,166,189,225],"and":[12,38,42,56,85,94,129,152,212],"to":[13,197,233],"assess":[14],"whether":[15],"RA":[18,37,69,103,118,165,188,196,224,229],"differs":[20],"from":[21,241],"that":[22],"non-RA":[24,106,137,168,191,227],"patients.":[25,107,169,192,228],"METHODS:":[26],"We":[27,47],"retrospectively":[28],"divided":[29],"into":[32],"two":[33,45,180],"groups,":[34,181],"those":[35,39,133],"with":[36,54,71],"without":[40],"RA,":[41],"compared":[43],"groups.":[46],"evaluated":[48],"risk":[50,201,237],"factors":[51],"for":[52,203,239],"mortality":[53,182,240],"univariate":[55],"multivariate":[57],"logistic":[58],"regression":[59],"analysis.":[60],"RESULTS:":[61],"Among":[62],"1549":[63],"patients,":[64],"71":[65],"had":[66,81,87],"RA.":[67],"The":[68,108],"were":[73,78,97,120,139,157,215],"71.0\u00b18.9":[74],"years":[75],"old,":[76],"54.9%":[77],"female,":[79],"40.9%":[80],"a":[82],"smoking":[83],"history,":[84],"71.8%":[86],"underlying":[88],"respiratory":[89,95],"disease.":[90],"Female":[91],"sex,":[92],"non-smoker,":[93],"comorbidities":[96],"statistically":[98,184,216],"more":[99,161,217],"frequent":[100,110,218],"than":[105,167,190,226],"most":[109],"causative":[111],"microbial":[112],"agents":[113],"Streptococcus":[121],"pneumoniae,":[122,128,141,145],"Pseudomonas":[123],"aeruginosa,":[124,149,207],"Haemophilus":[125],"influenzae,":[126,151,209],"Mycoplasma":[127],"influenza":[130,142],"virus,":[131,143],"whereas":[132],"S.":[140],"M.":[144,210],"Legionella":[146],"spp.,":[147],"P.":[148,206],"H.":[150,208],"Moraxella":[153],"catarrhalis.":[154],"Polymicrobial":[155],"infection":[156,214],"identified":[158],"as":[159],"etiologies":[160,219],"frequently":[162],"Although":[170],"severity":[172],"did":[175],"not":[176],"differ":[177],"between":[178],"was":[183,231],"higher":[185],"Multivariate":[193],"analysis":[194],"showed":[195],"be":[198,234],"an":[199,235],"independent":[200,236],"factor":[202,238],"mortality.":[204],"CONCLUSIONS:":[205],"catarrhalis,":[211],"polymicrobial":[213],"itself":[230],"found":[232],"pneumonia.":[242]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":7},{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":4},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":4},{"year":2020,"cited_by_count":5},{"year":2019,"cited_by_count":1}],"updated_date":"2026-10-31T12:09:11.096373","created_date":"2018-08-22T00:00:00"}