{"id":"https://openalex.org/W2885960992","doi":"https://doi.org/10.1111/ectj.12118","title":"Optimal panel unit root testing with covariates","display_name":"Optimal panel unit root testing with covariates","publication_year":2018,"publication_date":"2018-08-07","ids":{"openalex":"https://openalex.org/W2885960992","doi":"https://doi.org/10.1111/ectj.12118","mag":"2885960992"},"language":"en","primary_location":{"id":"doi:10.1111/ectj.12118","doi":"https://doi.org/10.1111/ectj.12118","is_oa":true,"landing_page_url":"https://doi.org/10.1111/ectj.12118","pdf_url":"https://academic.oup.com/ectj/article-pdf/22/1/57/44245055/ectj_22_1_57.pdf","source":{"id":"https://openalex.org/S33519306","display_name":"Econometrics Journal","issn_l":"1368-4221","issn":["1368-4221","1368-423X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["abdc-a-star","cwts-core","erih-plus","jufo-2","norway-2"],"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Econometrics Journal","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://academic.oup.com/ectj/article-pdf/22/1/57/44245055/ectj_22_1_57.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5050691287","display_name":"Art\u016bras Juodis","orcid":"https://orcid.org/0000-0003-3973-7221","observed_orcids":["https://orcid.org/0000-0003-3973-7221"]},"institutions":[{"id":"https://openalex.org/I169381384","display_name":"University of Groningen","ror":"https://ror.org/012p63287","country_code":"NL","type":"education","lineage":["https://openalex.org/I169381384"]}],"countries":["NL"],"is_corresponding":true,"raw_author_name":"Art\u016bras Juodis","raw_affiliation_strings":["Faculty of Economics and Business, University of Groningen, Nettelbosje 2, 9747 AE Groningen, The Netherlands","Faculty of Economics and Business, University of Groningen, Nettelbosje 2, 9747\n AE Groningen, The Netherlands"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Economics and Business, University of Groningen, Nettelbosje 2, 9747 AE Groningen, The Netherlands","institution_ids":["https://openalex.org/I169381384"]},{"raw_affiliation_string":"Faculty of Economics and Business, University of Groningen, Nettelbosje 2, 9747\n AE Groningen, The Netherlands","institution_ids":["https://openalex.org/I169381384"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5103238589","display_name":"Joakim Westerlund","orcid":"https://orcid.org/0000-0002-8030-5706","observed_orcids":["https://orcid.org/0000-0002-8030-5706"]},"institutions":[{"id":"https://openalex.org/I149704539","display_name":"Deakin University","ror":"https://ror.org/02czsnj07","country_code":"AU","type":"education","lineage":["https://openalex.org/I149704539"]},{"id":"https://openalex.org/I187531555","display_name":"Lund University","ror":"https://ror.org/012a77v79","country_code":"SE","type":"education","lineage":["https://openalex.org/I187531555"]}],"countries":["AU","SE"],"is_corresponding":true,"raw_author_name":"Joakim Westerlund","raw_affiliation_strings":["Centre for Financial Econometrics, Deakin Business School, Deakin University, 221 Burwood Highway Burwood, Victoria 3125, Australia","Department of Economics, Lund University, Box 7082, 220 07 Lund, Sweden","Centre for Financial Econometrics, Deakin Business School, Deakin University,\n 221 Burwood Highway Burwood, Victoria 3125, Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Centre for Financial Econometrics, Deakin Business School, Deakin University, 221 Burwood Highway Burwood, Victoria 3125, Australia","institution_ids":["https://openalex.org/I149704539"]},{"raw_affiliation_string":"Department of Economics, Lund University, Box 7082, 220 07 Lund, Sweden","institution_ids":["https://openalex.org/I187531555"]},{"raw_affiliation_string":"Centre for Financial Econometrics, Deakin Business School, Deakin University,\n 221 Burwood Highway Burwood, Victoria 3125, Australia","institution_ids":["https://openalex.org/I149704539"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5050691287","https://openalex.org/A5103238589"],"corresponding_institution_ids":["https://openalex.org/I149704539","https://openalex.org/I169381384","https://openalex.org/I187531555"],"apc_list":{"value":3384,"currency":"GBP","value_usd":4463},"apc_paid":{"value":3384,"currency":"GBP","value_usd":4463},"fwci":0.7502,"has_fulltext":true,"cited_by_count":9,"citation_normalized_percentile":{"value":0.80987462,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":97},"biblio":{"volume":"22","issue":"1","first_page":"57","last_page":"72"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11911","display_name":"Spatial and Panel Data Analysis","score":0.7304999828338623,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T11911","display_name":"Spatial and Panel Data Analysis","score":0.7304999828338623,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10007","display_name":"Monetary Policy and Economic Impact","score":0.21570000052452087,"subfield":{"id":"https://openalex.org/subfields/2000","display_name":"General Economics, Econometrics and Finance"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T13370","display_name":"Diverse Scientific and Economic Studies","score":0.01640000008046627,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/panel-unit-root-tests","display_name":"panel unit root tests","score":0.9679999947547913},{"id":"https://openalex.org/keywords/covariates","display_name":"covariates","score":0.9459999799728394},{"id":"https://openalex.org/keywords/asymptotic-optimality","display_name":"asymptotic optimality","score":0.9089999794960022},{"id":"https://openalex.org/keywords/statistical-power","display_name":"statistical power","score":0.6460000276565552},{"id":"https://openalex.org/keywords/panel-data","display_name":"panel data","score":0.8130000233650208}],"concepts":[{"id":"https://openalex.org/C119043178","wikidata":"https://www.wikidata.org/wiki/Q320723","display_name":"Covariate","level":2,"score":0.916440486907959},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.7144282460212708},{"id":"https://openalex.org/C195561663","wikidata":"https://www.wikidata.org/wiki/Q1307899","display_name":"Unit root","level":2,"score":0.7141088247299194},{"id":"https://openalex.org/C6422946","wikidata":"https://www.wikidata.org/wiki/Q857354","display_name":"Panel data","level":2,"score":0.6228902339935303},{"id":"https://openalex.org/C149782125","wikidata":"https://www.wikidata.org/wiki/Q160039","display_name":"Econometrics","level":1,"score":0.546014130115509},{"id":"https://openalex.org/C122637931","wikidata":"https://www.wikidata.org/wiki/Q118084","display_name":"Unit (ring theory)","level":2,"score":0.5051818490028381},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.49172714352607727},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.46369683742523193},{"id":"https://openalex.org/C65155139","wikidata":"https://www.wikidata.org/wiki/Q5380912","display_name":"Envelope (radar)","level":3,"score":0.4556387662887573},{"id":"https://openalex.org/C163716315","wikidata":"https://www.wikidata.org/wiki/Q901177","display_name":"Gaussian","level":2,"score":0.44798073172569275},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.4477593004703522},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.31581756472587585},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.10647398233413696},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C145420912","wikidata":"https://www.wikidata.org/wiki/Q853077","display_name":"Mathematics education","level":1,"score":0.0},{"id":"https://openalex.org/C166957645","wikidata":"https://www.wikidata.org/wiki/Q23498","display_name":"Archaeology","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C554190296","wikidata":"https://www.wikidata.org/wiki/Q47528","display_name":"Radar","level":2,"score":0.0}],"mesh":[],"locations_count":5,"locations":[{"id":"doi:10.1111/ectj.12118","doi":"https://doi.org/10.1111/ectj.12118","is_oa":true,"landing_page_url":"https://doi.org/10.1111/ectj.12118","pdf_url":"https://academic.oup.com/ectj/article-pdf/22/1/57/44245055/ectj_22_1_57.pdf","source":{"id":"https://openalex.org/S33519306","display_name":"Econometrics Journal","issn_l":"1368-4221","issn":["1368-4221","1368-423X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["abdc-a-star","cwts-core","erih-plus","jufo-2","norway-2"],"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Econometrics Journal","raw_type":"journal-article"},{"id":"pmh:oai:pure.rug.nl:openaire/5767d8ab-f533-49e6-96f9-40c2aa90a84c","doi":null,"is_oa":true,"landing_page_url":"https://research.rug.nl/en/publications/5767d8ab-f533-49e6-96f9-40c2aa90a84c","pdf_url":null,"source":{"id":"https://openalex.org/S4306400420","display_name":"University of Groningen research database (University of Groningen / Centre for Information Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I169381384","host_organization_name":"University of Groningen","host_organization_lineage":["https://openalex.org/I169381384"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Juodis, A & Westerlund, J 2019, 'Optimal Panel Unit Root Testing with Covariates', The Econometrics Journal, vol. 22, no. 1, pp. 57-72. https://doi.org/10.1111/ectj.12118","raw_type":"info:eu-repo/semantics/publishedVersion"},{"id":"pmh:oai:RePEc:oup:emjrnl:v:22:y:2019:i:1:p:57-72.","doi":null,"is_oa":false,"landing_page_url":"http://hdl.handle.net/10.1111/ectj.12118","pdf_url":null,"source":{"id":"https://openalex.org/S4306401271","display_name":"RePEc: Research Papers in Economics","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I77793887","host_organization_name":"Federal Reserve Bank of St. Louis","host_organization_lineage":["https://openalex.org/I77793887"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"article"},{"id":"pmh:oai:lup.lub.lu.se:113bfdfa-ff6d-4b89-aaba-702a7ca60d5c","doi":null,"is_oa":false,"landing_page_url":"https://lup.lub.lu.se/record/113bfdfa-ff6d-4b89-aaba-702a7ca60d5c","pdf_url":null,"source":{"id":"https://openalex.org/S4306400536","display_name":"Lund University Publications (Lund University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I187531555","host_organization_name":"Lund University","host_organization_lineage":["https://openalex.org/I187531555"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"ISSN: 1368-423X","raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:rug:oai:pure.rug.nl:publications/5767d8ab-f533-49e6-96f9-40c2aa90a84c","doi":null,"is_oa":true,"landing_page_url":"https://research.rug.nl/en/publications/5767d8ab-f533-49e6-96f9-40c2aa90a84c","pdf_url":null,"source":{"id":"https://openalex.org/S4306400420","display_name":"University of Groningen research database (University of Groningen / Centre for Information Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I169381384","host_organization_name":"University of Groningen","host_organization_lineage":["https://openalex.org/I169381384"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"The Econometrics Journal, 22(1), 57 - 72","raw_type":"info:eu-repo/semantics/article"}],"best_oa_location":{"id":"doi:10.1111/ectj.12118","doi":"https://doi.org/10.1111/ectj.12118","is_oa":true,"landing_page_url":"https://doi.org/10.1111/ectj.12118","pdf_url":"https://academic.oup.com/ectj/article-pdf/22/1/57/44245055/ectj_22_1_57.pdf","source":{"id":"https://openalex.org/S33519306","display_name":"Econometrics Journal","issn_l":"1368-4221","issn":["1368-4221","1368-423X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["abdc-a-star","cwts-core","erih-plus","jufo-2","norway-2"],"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Econometrics Journal","raw_type":"journal-article"},"sustainable_development_goals":[],"sustainable_development_goals_aurora":[{"display_name":"Sustainable cities and communities","score":0.7300000190734863,"id":"https://metadata.un.org/sdg/11"}],"study_designs":[],"awards":[{"id":"https://openalex.org/G680971154","display_name":"We do not live in a bubble: economic shocks in misspecified panel data models","funder_award_id":"451-17-002","funder_id":"https://openalex.org/F4320321800","funder_display_name":"Nederlandse Organisatie voor Wetenschappelijk Onderzoek"}],"funders":[{"id":"https://openalex.org/F4320320933","display_name":"Rijksuniversiteit Groningen","ror":"https://ror.org/012p63287"},{"id":"https://openalex.org/F4320321800","display_name":"Nederlandse Organisatie voor Wetenschappelijk Onderzoek","ror":"https://ror.org/04jsz6e67"},{"id":"https://openalex.org/F4320321806","display_name":"Lunds Universitet","ror":"https://ror.org/012a77v79"},{"id":"https://openalex.org/F4320322327","display_name":"Knut och Alice Wallenbergs Stiftelse","ror":"https://ror.org/004hzzk67"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2885960992.pdf","grobid_xml":"https://content.openalex.org/works/W2885960992.grobid-xml"},"referenced_works_count":28,"referenced_works":["https://openalex.org/W1617221341","https://openalex.org/W1749775183","https://openalex.org/W1866415339","https://openalex.org/W1899180799","https://openalex.org/W1918744927","https://openalex.org/W1972861819","https://openalex.org/W1976672380","https://openalex.org/W1987339343","https://openalex.org/W1992638046","https://openalex.org/W2062051455","https://openalex.org/W2063706690","https://openalex.org/W2066991364","https://openalex.org/W2096708933","https://openalex.org/W2104764694","https://openalex.org/W2122542714","https://openalex.org/W2136762587","https://openalex.org/W2149292156","https://openalex.org/W2168257636","https://openalex.org/W2168558419","https://openalex.org/W2742439053","https://openalex.org/W3122141501","https://openalex.org/W3122205792","https://openalex.org/W3123185352","https://openalex.org/W3123353535","https://openalex.org/W3124550551","https://openalex.org/W3124616904","https://openalex.org/W3125561897","https://openalex.org/W6651761313"],"related_works":["https://openalex.org/W2985746494","https://openalex.org/W4206042385","https://openalex.org/W2511384863","https://openalex.org/W2080773131","https://openalex.org/W2096089271","https://openalex.org/W2923628599","https://openalex.org/W2014100433","https://openalex.org/W2051519658","https://openalex.org/W3094572312","https://openalex.org/W651427102"],"abstract_inverted_index":{"Summary":[0],"This":[1],"paper":[2],"provides":[3],"asymptotic":[4],"optimality":[5],"results":[6],"for":[7,72],"panel":[8,34],"unit":[9],"root":[10],"tests":[11],"with":[12],"covariates":[13,28,52],"by":[14],"deriving":[15],"the":[16,25,33,42,48,51,67],"Gaussian":[17],"power":[18,74],"envelope.":[19],"The":[20],"main":[21],"conclusion":[22],"is":[23,75],"that":[24],"use":[26,49],"of":[27,50],"holds":[29],"considerable":[30],"promise":[31],"in":[32,41],"data":[35],"context,":[36],"much":[37],"more":[38],"so":[39],"than":[40],"time":[43],"series":[44],"context.":[45],"In":[46],"fact,":[47],"not":[53],"only":[54],"leads":[55],"to":[56],"increased":[57],"power,":[58],"but":[59],"can":[60],"actually":[61],"have":[62],"an":[63],"order":[64],"effect":[65],"on":[66],"shrinking":[68],"neighbourhoods":[69],"around":[70],"unity":[71],"which":[73],"non-negligible.":[76]},"counts_by_year":[{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":1}],"updated_date":"2026-09-26T08:19:03.415552","created_date":"2018-08-22T00:00:00"}