{"id":"https://openalex.org/W2913103126","doi":"https://doi.org/10.3389/fneur.2019.00049","title":"Measuring Anxiety in Patients With Early-Stage Parkinson's Disease: Rasch Analysis of the State-Trait Anxiety Inventory","display_name":"Measuring Anxiety in Patients With Early-Stage Parkinson's Disease: Rasch Analysis of the State-Trait Anxiety Inventory","publication_year":2019,"publication_date":"2019-02-13","ids":{"openalex":"https://openalex.org/W2913103126","doi":"https://doi.org/10.3389/fneur.2019.00049","mag":"2913103126","pmid":"https://pubmed.ncbi.nlm.nih.gov/30837928","pmcid":"https://www.ncbi.nlm.nih.gov/pmc/articles/6383064"},"language":"en","primary_location":{"id":"doi:10.3389/fneur.2019.00049","doi":"https://doi.org/10.3389/fneur.2019.00049","is_oa":true,"landing_page_url":"https://doi.org/10.3389/fneur.2019.00049","pdf_url":"https://www.frontiersin.org/articles/10.3389/fneur.2019.00049/pdf","source":{"id":"https://openalex.org/S96975567","display_name":"Frontiers in Neurology","issn_l":"1664-2295","issn":["1664-2295"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","jufo-1","medline","norway-1","poland-100","russia-white-list-2","vabb-shw"],"host_organization":"https://openalex.org/P4310320527","host_organization_name":"Frontiers Media","host_organization_lineage":["https://openalex.org/P4310320527"],"host_organization_lineage_names":["Frontiers Media"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Frontiers in Neurology","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref","doaj","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.frontiersin.org/articles/10.3389/fneur.2019.00049/pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5101682148","display_name":"Hui-Jun Yang","orcid":"https://orcid.org/0000-0002-3593-1134","observed_orcids":["https://orcid.org/0000-0002-3593-1134"]},"institutions":[{"id":"https://openalex.org/I40542001","display_name":"University of Ulsan","ror":"https://ror.org/02c2f8975","country_code":"KR","type":"education","lineage":["https://openalex.org/I40542001"]},{"id":"https://openalex.org/I4210136447","display_name":"Ulsan University Hospital","ror":"https://ror.org/03sab2a45","country_code":"KR","type":"healthcare","lineage":["https://openalex.org/I4210136447"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Hui-Jun Yang","raw_affiliation_strings":["Department of Neurology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Neurology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea","institution_ids":["https://openalex.org/I40542001","https://openalex.org/I4210136447"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102901560","display_name":"Joon\u2010Ho Ahn","orcid":"https://orcid.org/0000-0001-9790-2155","observed_orcids":["https://orcid.org/0000-0001-9790-2155"]},"institutions":[{"id":"https://openalex.org/I40542001","display_name":"University of Ulsan","ror":"https://ror.org/02c2f8975","country_code":"KR","type":"education","lineage":["https://openalex.org/I40542001"]},{"id":"https://openalex.org/I4210136447","display_name":"Ulsan University Hospital","ror":"https://ror.org/03sab2a45","country_code":"KR","type":"healthcare","lineage":["https://openalex.org/I4210136447"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Joon-Ho Ahn","raw_affiliation_strings":["Department of Psychiatry, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Psychiatry, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea","institution_ids":["https://openalex.org/I40542001","https://openalex.org/I4210136447"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5085858773","display_name":"Jung Sun Lee","orcid":"https://orcid.org/0000-0003-2171-2720","observed_orcids":["https://orcid.org/0000-0003-2171-2720"]},"institutions":[{"id":"https://openalex.org/I2801680663","display_name":"Asan Medical Center","ror":"https://ror.org/03s5q0090","country_code":"KR","type":"healthcare","lineage":["https://openalex.org/I2801680663","https://openalex.org/I4210167194"]},{"id":"https://openalex.org/I40542001","display_name":"University of Ulsan","ror":"https://ror.org/02c2f8975","country_code":"KR","type":"education","lineage":["https://openalex.org/I40542001"]},{"id":"https://openalex.org/I4210136447","display_name":"Ulsan University Hospital","ror":"https://ror.org/03sab2a45","country_code":"KR","type":"healthcare","lineage":["https://openalex.org/I4210136447"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Jungsun Lee","raw_affiliation_strings":["Department of Occupational and Environmental Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea","Department of Psychiatry, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Occupational and Environmental Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea","institution_ids":["https://openalex.org/I40542001","https://openalex.org/I4210136447"]},{"raw_affiliation_string":"Department of Psychiatry, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea","institution_ids":["https://openalex.org/I2801680663","https://openalex.org/I40542001"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5012863258","display_name":"Won Kee Lee","orcid":"https://orcid.org/0000-0003-4217-5792","observed_orcids":["https://orcid.org/0000-0003-4217-5792"]},"institutions":[{"id":"https://openalex.org/I2801673063","display_name":"Kyungpook National University Hospital","ror":"https://ror.org/04qn0xg47","country_code":"KR","type":"healthcare","lineage":["https://openalex.org/I2801673063","https://openalex.org/I31419693"]},{"id":"https://openalex.org/I31419693","display_name":"Kyungpook National University","ror":"https://ror.org/040c17130","country_code":"KR","type":"education","lineage":["https://openalex.org/I31419693"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Won Kee Lee","raw_affiliation_strings":["Medical Research Collaboration Center, Kyungpook National University Hospital and School of Medicine, Kyungpook National University, Daegu, South Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Medical Research Collaboration Center, Kyungpook National University Hospital and School of Medicine, Kyungpook National University, Daegu, South Korea","institution_ids":["https://openalex.org/I2801673063","https://openalex.org/I31419693"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100744050","display_name":"Jiho Lee","orcid":"https://orcid.org/0000-0001-8027-835X","observed_orcids":["https://orcid.org/0000-0001-8027-835X"]},"institutions":[{"id":"https://openalex.org/I2801680663","display_name":"Asan Medical Center","ror":"https://ror.org/03s5q0090","country_code":"KR","type":"healthcare","lineage":["https://openalex.org/I2801680663","https://openalex.org/I4210167194"]},{"id":"https://openalex.org/I40542001","display_name":"University of Ulsan","ror":"https://ror.org/02c2f8975","country_code":"KR","type":"education","lineage":["https://openalex.org/I40542001"]},{"id":"https://openalex.org/I4210136447","display_name":"Ulsan University Hospital","ror":"https://ror.org/03sab2a45","country_code":"KR","type":"healthcare","lineage":["https://openalex.org/I4210136447"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Jiho Lee","raw_affiliation_strings":["Department of Occupational and Environmental Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea","Department of Psychiatry, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Occupational and Environmental Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea","institution_ids":["https://openalex.org/I40542001","https://openalex.org/I4210136447"]},{"raw_affiliation_string":"Department of Psychiatry, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea","institution_ids":["https://openalex.org/I2801680663","https://openalex.org/I40542001"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5018638722","display_name":"Yangho Kim","orcid":"https://orcid.org/0000-0002-6462-0829","observed_orcids":["https://orcid.org/0000-0002-6462-0829"]},"institutions":[{"id":"https://openalex.org/I40542001","display_name":"University of Ulsan","ror":"https://ror.org/02c2f8975","country_code":"KR","type":"education","lineage":["https://openalex.org/I40542001"]},{"id":"https://openalex.org/I4210136447","display_name":"Ulsan University Hospital","ror":"https://ror.org/03sab2a45","country_code":"KR","type":"healthcare","lineage":["https://openalex.org/I4210136447"]}],"countries":["KR"],"is_corresponding":true,"raw_author_name":"Yangho Kim","raw_affiliation_strings":["Department of Occupational and Environmental Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Occupational and Environmental Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea","institution_ids":["https://openalex.org/I40542001","https://openalex.org/I4210136447"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5018638722"],"corresponding_institution_ids":["https://openalex.org/I40542001","https://openalex.org/I4210136447"],"apc_list":{"value":2950,"currency":"USD","value_usd":2950},"apc_paid":{"value":2950,"currency":"USD","value_usd":2950},"fwci":1.6101,"has_fulltext":true,"cited_by_count":31,"citation_normalized_percentile":{"value":0.83916491,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":93,"max":99},"biblio":{"volume":"10","issue":null,"first_page":"49","last_page":"49"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10467","display_name":"Psychometric Methodologies and Testing","score":0.9467999935150146,"subfield":{"id":"https://openalex.org/subfields/1803","display_name":"Management Science and Operations Research"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T10467","display_name":"Psychometric Methodologies and Testing","score":0.9467999935150146,"subfield":{"id":"https://openalex.org/subfields/1803","display_name":"Management Science and Operations Research"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10853","display_name":"Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes","score":0.033799998462200165,"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/T10085","display_name":"Parkinson's Disease Mechanisms and Treatments","score":0.005200000014156103,"subfield":{"id":"https://openalex.org/subfields/2728","display_name":"Neurology"},"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/parkinson-s-disease","display_name":"Parkinson's disease","score":0.9539999961853027},{"id":"https://openalex.org/keywords/anxiety","display_name":"anxiety","score":0.8830000162124634},{"id":"https://openalex.org/keywords/state-trait-anxiety-inventory","display_name":"State-Trait Anxiety Inventory","score":0.996999979019165},{"id":"https://openalex.org/keywords/rasch-analysis","display_name":"Rasch analysis","score":0.7390000224113464},{"id":"https://openalex.org/keywords/item-response-theory","display_name":"item response theory","score":0.8939999938011169},{"id":"https://openalex.org/keywords/clinimetric-properties","display_name":"clinimetric properties","score":0.7279999852180481},{"id":"https://openalex.org/keywords/differential-item-functioning","display_name":"differential item functioning","score":0.8029999732971191},{"id":"https://openalex.org/keywords/unidimensionality","display_name":"unidimensionality","score":0.8130000233650208},{"id":"https://openalex.org/keywords/early-parkinson-s-disease","display_name":"early-stage Parkinson's disease","score":0.7390000224113464},{"id":"https://openalex.org/keywords/parkinson-s-progression-markers-initiative","display_name":"Parkinson's Progression Markers Initiative","score":0.7860000133514404}],"concepts":[{"id":"https://openalex.org/C101266164","wikidata":"https://www.wikidata.org/wiki/Q2131821","display_name":"Rasch model","level":2,"score":0.8650968074798584},{"id":"https://openalex.org/C2779734285","wikidata":"https://www.wikidata.org/wiki/Q11085","display_name":"Parkinson's disease","level":3,"score":0.7136433124542236},{"id":"https://openalex.org/C558461103","wikidata":"https://www.wikidata.org/wiki/Q154430","display_name":"Anxiety","level":2,"score":0.6718568801879883},{"id":"https://openalex.org/C2777417529","wikidata":"https://www.wikidata.org/wiki/Q7602980","display_name":"State-Trait Anxiety Inventory","level":3,"score":0.5782749056816101},{"id":"https://openalex.org/C70410870","wikidata":"https://www.wikidata.org/wiki/Q199906","display_name":"Clinical psychology","level":1,"score":0.5668431520462036},{"id":"https://openalex.org/C207968926","wikidata":"https://www.wikidata.org/wiki/Q7227107","display_name":"Polytomous Rasch model","level":4,"score":0.5533928275108337},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.502230167388916},{"id":"https://openalex.org/C146357865","wikidata":"https://www.wikidata.org/wiki/Q1123245","display_name":"Stage (stratigraphy)","level":2,"score":0.4731365740299225},{"id":"https://openalex.org/C106934330","wikidata":"https://www.wikidata.org/wiki/Q1971873","display_name":"Trait","level":2,"score":0.4622146487236023},{"id":"https://openalex.org/C2992367442","wikidata":"https://www.wikidata.org/wiki/Q154430","display_name":"Trait anxiety","level":3,"score":0.4394078850746155},{"id":"https://openalex.org/C171606756","wikidata":"https://www.wikidata.org/wiki/Q506132","display_name":"Psychometrics","level":2,"score":0.3931656777858734},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.372742235660553},{"id":"https://openalex.org/C118552586","wikidata":"https://www.wikidata.org/wiki/Q7867","display_name":"Psychiatry","level":1,"score":0.35257458686828613},{"id":"https://openalex.org/C2779134260","wikidata":"https://www.wikidata.org/wiki/Q12136","display_name":"Disease","level":2,"score":0.3283706307411194},{"id":"https://openalex.org/C138496976","wikidata":"https://www.wikidata.org/wiki/Q175002","display_name":"Developmental psychology","level":1,"score":0.2612055838108063},{"id":"https://openalex.org/C19875794","wikidata":"https://www.wikidata.org/wiki/Q1207340","display_name":"Item response theory","level":3,"score":0.21178275346755981},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.1993340253829956},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.06948578357696533},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.06007161736488342},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0}],"mesh":[],"locations_count":5,"locations":[{"id":"doi:10.3389/fneur.2019.00049","doi":"https://doi.org/10.3389/fneur.2019.00049","is_oa":true,"landing_page_url":"https://doi.org/10.3389/fneur.2019.00049","pdf_url":"https://www.frontiersin.org/articles/10.3389/fneur.2019.00049/pdf","source":{"id":"https://openalex.org/S96975567","display_name":"Frontiers in Neurology","issn_l":"1664-2295","issn":["1664-2295"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","jufo-1","medline","norway-1","poland-100","russia-white-list-2","vabb-shw"],"host_organization":"https://openalex.org/P4310320527","host_organization_name":"Frontiers Media","host_organization_lineage":["https://openalex.org/P4310320527"],"host_organization_lineage_names":["Frontiers Media"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Frontiers in Neurology","raw_type":"journal-article"},{"id":"pmh:oai:europepmc.org:5389379","doi":null,"is_oa":true,"landing_page_url":"http://europepmc.org/pmc/articles/PMC6383064","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":"","raw_type":"Text"},{"id":"pmh:oai:pubmedcentral.nih.gov:6383064","doi":null,"is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/6383064","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":"Front Neurol","raw_type":"Text"},{"id":"pmid:30837928","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/30837928","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":"Frontiers in neurology","raw_type":"Journal Article"},{"id":"pmh:oai:doaj.org/article:8547a8c970544d69879d106e8c7488bd","doi":null,"is_oa":true,"landing_page_url":"https://doaj.org/article/8547a8c970544d69879d106e8c7488bd","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":"Frontiers in Neurology, Vol 10 (2019)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.3389/fneur.2019.00049","doi":"https://doi.org/10.3389/fneur.2019.00049","is_oa":true,"landing_page_url":"https://doi.org/10.3389/fneur.2019.00049","pdf_url":"https://www.frontiersin.org/articles/10.3389/fneur.2019.00049/pdf","source":{"id":"https://openalex.org/S96975567","display_name":"Frontiers in Neurology","issn_l":"1664-2295","issn":["1664-2295"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","jufo-1","medline","norway-1","poland-100","russia-white-list-2","vabb-shw"],"host_organization":"https://openalex.org/P4310320527","host_organization_name":"Frontiers Media","host_organization_lineage":["https://openalex.org/P4310320527"],"host_organization_lineage_names":["Frontiers Media"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Frontiers in Neurology","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Good health and well-being","id":"https://metadata.un.org/sdg/3","score":0.9940000176429749}],"study_designs":[],"awards":[{"id":"https://openalex.org/G7186546741","display_name":null,"funder_award_id":"UUH-2017-03","funder_id":"https://openalex.org/F4320337094","funder_display_name":"Ulsan University Hospital"}],"funders":[{"id":"https://openalex.org/F4320337094","display_name":"Ulsan University Hospital","ror":"https://ror.org/03sab2a45"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2913103126.pdf","grobid_xml":"https://content.openalex.org/works/W2913103126.grobid-xml"},"referenced_works_count":49,"referenced_works":["https://openalex.org/W424712379","https://openalex.org/W1532775726","https://openalex.org/W1564667745","https://openalex.org/W1571372337","https://openalex.org/W1583372272","https://openalex.org/W1763651971","https://openalex.org/W1764039039","https://openalex.org/W1909091304","https://openalex.org/W1953921871","https://openalex.org/W1977733462","https://openalex.org/W1986965784","https://openalex.org/W1988494453","https://openalex.org/W1993807570","https://openalex.org/W1994962241","https://openalex.org/W1995781614","https://openalex.org/W2000616298","https://openalex.org/W2006646187","https://openalex.org/W2022031020","https://openalex.org/W2024532911","https://openalex.org/W2031136678","https://openalex.org/W2039571038","https://openalex.org/W2040625291","https://openalex.org/W2048389580","https://openalex.org/W2051039162","https://openalex.org/W2062016899","https://openalex.org/W2068472419","https://openalex.org/W2068606962","https://openalex.org/W2080743918","https://openalex.org/W2098459521","https://openalex.org/W2121594879","https://openalex.org/W2125678405","https://openalex.org/W2133540956","https://openalex.org/W2143885557","https://openalex.org/W2148103616","https://openalex.org/W2152289942","https://openalex.org/W2157427387","https://openalex.org/W2162054698","https://openalex.org/W2310508758","https://openalex.org/W2340335080","https://openalex.org/W2560199702","https://openalex.org/W2581714707","https://openalex.org/W2588484621","https://openalex.org/W2727633501","https://openalex.org/W2782159442","https://openalex.org/W2793781541","https://openalex.org/W4243552961","https://openalex.org/W6650742633","https://openalex.org/W6660723724","https://openalex.org/W7074019735"],"related_works":["https://openalex.org/W1986965784","https://openalex.org/W1608841350","https://openalex.org/W2148103616","https://openalex.org/W2068472419","https://openalex.org/W2006646187","https://openalex.org/W4413911118","https://openalex.org/W1595236630","https://openalex.org/W1953921871","https://openalex.org/W4409251622","https://openalex.org/W2138117707"],"abstract_inverted_index":{"The":[0,76,115,146,176],"State-Trait":[1],"Anxiety":[2],"Inventory":[3],"(STAI),":[4],"composed":[5],"of":[6,31,38,59,63,92,100,118,180,187,216,239],"two":[7],"20-item":[8],"subscales":[9],"(STAI-state":[10],"and":[11,88,121,136,155,173],"STAI-trait),":[12],"has":[13,43],"been":[14,45],"increasingly":[15],"used":[16],"to":[17,51,142,153,193,207,234],"assess":[18,208],"anxiety":[19],"symptoms":[20],"in":[21,112,164,191,219,232],"patients":[22,64,106,220],"with":[23,65,221],"Parkinson\u2019s":[24],"disease":[25],"(PD).":[26],"However,":[27],"the":[28,32,35,39,60,70,93,119,143,156,181,184,195,204,209,214,217,227,236,240],"clinimetric":[29,165,237],"attributes":[30,238],"STAI":[33,61,94,218],"under":[34],"statistical":[36],"framework":[37],"item-response":[40],"theory":[41],"(IRT)":[42],"not":[44],"fully":[46],"elucidated":[47],"within":[48],"this":[49,202],"population":[50],"date.":[52],"We":[53],"performed":[54],"an":[55],"IRT-based":[56],"Rasch":[57,78,144,196,224],"analysis":[58,225],"outcomes":[62],"de":[66],"novo":[67],"PD":[68],"from":[69,151],"Parkinson's":[71],"Progression":[72],"Markers":[73],"Initiative":[74],"database.":[75],"unidimensionality,":[77],"model":[79,197],"fit,":[80],"scale":[81,134],"targeting,":[82],"separation":[83,125,174],"reliability,":[84],"differential":[85],"item":[86],"functioning,":[87,132],"response":[89,130,147],"category":[90,131],"utility":[91],"were":[95,110,149],"statistically":[96],"evaluated.":[97],"A":[98],"total":[99],"326":[101],"(209":[102],"males,":[103],"117":[104],"females)":[105],"without":[107,167],"cognitive":[108],"dysfunction":[109],"enrolled":[111],"our":[113,200],"study.":[114],"original":[116],"versions":[117],"STAI-state":[120,182],"STAI-trait":[122,159],"had":[123],"acceptable":[124],"reliability":[126],"but":[127],"lacked":[128],"appropriate":[129],"exhibited":[133],"off-targeting,":[135],"several":[137],"items":[138,190],"demonstrated":[139,160],"poor":[140],"fit":[141],"model.":[145],"categories":[148],"reduced":[150],"four":[152,188],"three,":[154],"rescored":[157,177],"three-point":[158,178],"a":[161,168],"marked":[162],"improvement":[163],"properties":[166,211],"significant":[169],"impact":[170],"on":[171,213],"unidimensionality":[172],"reliability.":[175],"version":[179],"required":[183],"additional":[185],"removal":[186],"misfitting":[189],"order":[192,233],"improve":[194,235],"fit.":[198],"To":[199],"knowledge,":[201],"is":[203],"first":[205],"study":[206],"measurement":[210],"based":[212],"IRT":[215],"PD.":[222],"Our":[223],"identified":[226],"components":[228],"requiring":[229],"possible":[230],"amendments":[231],"STAI.":[241]},"counts_by_year":[{"year":2026,"cited_by_count":5},{"year":2025,"cited_by_count":4},{"year":2024,"cited_by_count":8},{"year":2023,"cited_by_count":5},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":5},{"year":2020,"cited_by_count":2}],"updated_date":"2026-10-28T10:33:24.094632","created_date":"2019-02-21T00:00:00"}
