{"id":"https://openalex.org/W2029367686","doi":"https://doi.org/10.1002/art.23091","title":"Internal construct validity of the Oxford Knee Scale: Evidence from Rasch measurement","display_name":"Internal construct validity of the Oxford Knee Scale: Evidence from Rasch measurement","publication_year":2007,"publication_date":"2007-11-29","ids":{"openalex":"https://openalex.org/W2029367686","doi":"https://doi.org/10.1002/art.23091","mag":"2029367686","pmid":"https://pubmed.ncbi.nlm.nih.gov/18050174"},"language":"en","primary_location":{"id":"doi:10.1002/art.23091","doi":"https://doi.org/10.1002/art.23091","is_oa":false,"landing_page_url":"https://doi.org/10.1002/art.23091","pdf_url":null,"source":{"id":"https://openalex.org/S13698240","display_name":"Arthritis Care & Research","issn_l":"0893-7524","issn":["0893-7524","1529-0123","2151-464X","2151-4658"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-b","doyens","jufo-2","ki-jl-1","medline","norway-1","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Arthritis Care & Research","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","pubmed"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100608680","display_name":"Philip G. Conaghan","orcid":"https://orcid.org/0000-0002-3478-5665","observed_orcids":["https://orcid.org/0000-0002-3478-5665"]},"institutions":[{"id":"https://openalex.org/I130828816","display_name":"University of Leeds","ror":"https://ror.org/024mrxd33","country_code":"GB","type":"education","lineage":["https://openalex.org/I130828816"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Philip G. Conaghan","raw_affiliation_strings":["University of Leeds, Leeds, UK. p.conaghan@leeds.ac.uk","University of Leeds, Leeds, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Leeds, Leeds, UK. p.conaghan@leeds.ac.uk","institution_ids":["https://openalex.org/I130828816"]},{"raw_affiliation_string":"University of Leeds, Leeds, UK","institution_ids":["https://openalex.org/I130828816"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5081172967","display_name":"Mark E. Emerton","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I2799390153","display_name":"Leeds Teaching Hospitals NHS Trust","ror":"https://ror.org/00v4dac24","country_code":"GB","type":"healthcare","lineage":["https://openalex.org/I2799390153"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Mark Emerton","raw_affiliation_strings":["Leeds Teaching Hospitals Trust, Leeds, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Leeds Teaching Hospitals Trust, Leeds, UK","institution_ids":["https://openalex.org/I2799390153"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5000991227","display_name":"Alan Tennant","orcid":"https://orcid.org/0000-0002-0728-2130","observed_orcids":["https://orcid.org/0000-0002-0728-2130","https://orcid.org/0000-0003-1846-9141"]},"institutions":[{"id":"https://openalex.org/I130828816","display_name":"University of Leeds","ror":"https://ror.org/024mrxd33","country_code":"GB","type":"education","lineage":["https://openalex.org/I130828816"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Alan Tennant","raw_affiliation_strings":["University of Leeds, Leeds, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Leeds, Leeds, UK","institution_ids":["https://openalex.org/I130828816"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":4640,"currency":"USD","value_usd":4640},"apc_paid":null,"fwci":3.7283,"has_fulltext":false,"cited_by_count":75,"citation_normalized_percentile":{"value":0.92014539,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":91,"max":99},"biblio":{"volume":"57","issue":"8","first_page":"1363","last_page":"1367"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10467","display_name":"Psychometric Methodologies and Testing","score":0.92330002784729,"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":0.92330002784729,"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/T10084","display_name":"Musculoskeletal pain and rehabilitation","score":0.015399999916553497,"subfield":{"id":"https://openalex.org/subfields/3612","display_name":"Physical Therapy, Sports Therapy and Rehabilitation"},"field":{"id":"https://openalex.org/fields/36","display_name":"Health Professions"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10562","display_name":"Total Knee Arthroplasty Outcomes","score":0.011800000444054604,"subfield":{"id":"https://openalex.org/subfields/2746","display_name":"Surgery"},"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/oxford-knee-score","display_name":"Oxford Knee Score","score":0.8640000224113464},{"id":"https://openalex.org/keywords/knee-osteoarthritis","display_name":"knee osteoarthritis","score":0.984000027179718},{"id":"https://openalex.org/keywords/rasch-model","display_name":"Rasch model","score":0.8040000200271606},{"id":"https://openalex.org/keywords/differential-item-functioning","display_name":"differential item functioning","score":0.7350000143051147},{"id":"https://openalex.org/keywords/unidimensionality","display_name":"unidimensionality","score":0.9200000166893005},{"id":"https://openalex.org/keywords/patient-reported-outcome-measures","display_name":"patient-reported outcome measures","score":0.7720000147819519},{"id":"https://openalex.org/keywords/internal-consistency","display_name":"internal consistency","score":0.4909999966621399}],"concepts":[{"id":"https://openalex.org/C101266164","wikidata":"https://www.wikidata.org/wiki/Q2131821","display_name":"Rasch model","level":2,"score":0.9729081392288208},{"id":"https://openalex.org/C207968926","wikidata":"https://www.wikidata.org/wiki/Q7227107","display_name":"Polytomous Rasch model","level":4,"score":0.6798665523529053},{"id":"https://openalex.org/C2778755073","wikidata":"https://www.wikidata.org/wiki/Q10858537","display_name":"Scale (ratio)","level":2,"score":0.6655755043029785},{"id":"https://openalex.org/C43214815","wikidata":"https://www.wikidata.org/wiki/Q7310987","display_name":"Reliability (semiconductor)","level":3,"score":0.6272745132446289},{"id":"https://openalex.org/C181447626","wikidata":"https://www.wikidata.org/wiki/Q1224359","display_name":"Differential item functioning","level":4,"score":0.6065940260887146},{"id":"https://openalex.org/C49453240","wikidata":"https://www.wikidata.org/wiki/Q1592163","display_name":"Construct validity","level":3,"score":0.5851784944534302},{"id":"https://openalex.org/C1862650","wikidata":"https://www.wikidata.org/wiki/Q186005","display_name":"Physical therapy","level":1,"score":0.4731672406196594},{"id":"https://openalex.org/C2776164576","wikidata":"https://www.wikidata.org/wiki/Q62736","display_name":"Osteoarthritis","level":3,"score":0.4692991375923157},{"id":"https://openalex.org/C2780801425","wikidata":"https://www.wikidata.org/wiki/Q5164392","display_name":"Construct (python library)","level":2,"score":0.44754353165626526},{"id":"https://openalex.org/C89128539","wikidata":"https://www.wikidata.org/wiki/Q1949963","display_name":"Statistic","level":2,"score":0.4449371099472046},{"id":"https://openalex.org/C171606756","wikidata":"https://www.wikidata.org/wiki/Q506132","display_name":"Psychometrics","level":2,"score":0.3880632519721985},{"id":"https://openalex.org/C99508421","wikidata":"https://www.wikidata.org/wiki/Q2678675","display_name":"Physical medicine and rehabilitation","level":1,"score":0.3830057978630066},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.3779226541519165},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.3751992881298065},{"id":"https://openalex.org/C70410870","wikidata":"https://www.wikidata.org/wiki/Q199906","display_name":"Clinical psychology","level":1,"score":0.33967125415802},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.33081525564193726},{"id":"https://openalex.org/C19875794","wikidata":"https://www.wikidata.org/wiki/Q1207340","display_name":"Item response theory","level":3,"score":0.21963536739349365},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.19867366552352905},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.19420063495635986},{"id":"https://openalex.org/C142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","level":1,"score":0.07059067487716675},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.06214076280593872},{"id":"https://openalex.org/C204787440","wikidata":"https://www.wikidata.org/wiki/Q188504","display_name":"Alternative medicine","level":2,"score":0.0},{"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/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"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/C58640448","wikidata":"https://www.wikidata.org/wiki/Q42515","display_name":"Cartography","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}],"mesh":[{"descriptor_ui":"D000328","descriptor_name":"Adult","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":"D000369","descriptor_name":"Aged, 80 and over","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D004185","descriptor_name":"Disability Evaluation","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"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":"D010003","descriptor_name":"Osteoarthritis","qualifier_ui":"Q000503","qualifier_name":"physiopathology","is_major_topic":false},{"descriptor_ui":"D010003","descriptor_name":"Osteoarthritis","qualifier_ui":"Q000523","qualifier_name":"psychology","is_major_topic":false},{"descriptor_ui":"D010003","descriptor_name":"Osteoarthritis","qualifier_ui":"Q000628","qualifier_name":"therapy","is_major_topic":true},{"descriptor_ui":"D011594","descriptor_name":"Psychometrics","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false},{"descriptor_ui":"D011795","descriptor_name":"Surveys and Questionnaires","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012720","descriptor_name":"Severity of Illness Index","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D015203","descriptor_name":"Reproducibility of Results","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D015233","descriptor_name":"Models, Statistical","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D016896","descriptor_name":"Treatment Outcome","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D017063","descriptor_name":"Outcome Assessment, Health Care","qualifier_ui":"Q000592","qualifier_name":"standards","is_major_topic":false},{"descriptor_ui":"D017063","descriptor_name":"Outcome Assessment, Health Care","qualifier_ui":"Q000706","qualifier_name":"statistics & numerical data","is_major_topic":true}],"locations_count":2,"locations":[{"id":"doi:10.1002/art.23091","doi":"https://doi.org/10.1002/art.23091","is_oa":false,"landing_page_url":"https://doi.org/10.1002/art.23091","pdf_url":null,"source":{"id":"https://openalex.org/S13698240","display_name":"Arthritis Care & Research","issn_l":"0893-7524","issn":["0893-7524","1529-0123","2151-464X","2151-4658"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-b","doyens","jufo-2","ki-jl-1","medline","norway-1","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Arthritis Care & Research","raw_type":"journal-article"},{"id":"pmid:18050174","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/18050174","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":"Arthritis and rheumatism","raw_type":"Journal Article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Good health and well-being","score":0.9074000120162964,"id":"https://metadata.un.org/sdg/3"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":15,"referenced_works":["https://openalex.org/W12275852","https://openalex.org/W1492681742","https://openalex.org/W1514698039","https://openalex.org/W1869362176","https://openalex.org/W1920514635","https://openalex.org/W1966576448","https://openalex.org/W1986468615","https://openalex.org/W2054975254","https://openalex.org/W2127374659","https://openalex.org/W2135907374","https://openalex.org/W2143262046","https://openalex.org/W2159306398","https://openalex.org/W4213231055","https://openalex.org/W4256311010","https://openalex.org/W4292414119"],"related_works":["https://openalex.org/W4416102039","https://openalex.org/W2052321588","https://openalex.org/W4312210245","https://openalex.org/W4410472357","https://openalex.org/W2055960889","https://openalex.org/W2612905937","https://openalex.org/W1715370208","https://openalex.org/W2052207087","https://openalex.org/W2136094121","https://openalex.org/W3029756114"],"abstract_inverted_index":{"OBJECTIVE:":[0],"Symptomatic":[1],"knee":[2,29,72],"osteoarthritis":[3],"(OA)":[4],"is":[5,16,240],"present":[6],"in":[7,9,233],"1":[8],"8":[10],"patients":[11,66,134],"age":[12,130],">60":[13],"years":[14,137],"and":[15,110,140,216],"associated":[17],"with":[18,67,157,179,189,222,235],"significant":[19],"activity":[20],"limitation.":[21],"Several":[22],"tools":[23],"have":[24],"been":[25],"devised":[26],"to":[27,37,80,107,153],"assess":[28],"problems.":[30],"The":[31,128,202],"goal":[32],"of":[33,51,59,71,89,96,105,131,162,171,192,198,204,210,246],"this":[34,228],"study":[35],"was":[36,135,177],"evaluate":[38],"the":[39,52,76,81,87,90,94,103,114,132,148,154,172,175,185,190,193,199,205,213,236],"Oxford":[40],"Knee":[41],"Scale":[42],"(OKS)":[43],"against":[44],"strict":[45],"modern":[46],"psychometric":[47],"standards":[48],"through":[49],"application":[50],"Rasch":[53,82,155,200],"measurement":[54,83],"model.":[55,84,201],"METHODS:":[56],"A":[57],"total":[58],"224":[60,133],"OKS":[61,77,186],"assessments":[62],"were":[63,78,142,187],"included":[64],"from":[65,75,184],"a":[68,118,123,158,223,241],"clinical":[69],"diagnosis":[70],"OA.":[73],"Data":[74,183],"fitted":[79],"We":[85],"examined":[86],"validity":[88],"item":[91,97,101,115],"scoring":[92],"functions,":[93],"presence":[95],"bias":[98],"or":[99,112],"differential":[100],"functioning,":[102],"fit":[104,152],"data":[106],"model":[108],"expectations,":[109],"whether":[111],"not":[113],"set":[116],"formed":[117],"unidimensional":[119,242],"scale,":[120],"thus":[121],"giving":[122],"valid":[124],"summed":[125],"score.":[126],"RESULTS:":[127],"mean":[129],"61":[136],"(range":[138],"26-90)":[139],"61.5%":[141],"women.":[143],"After":[144],"rescoring":[145],"some":[146],"items,":[147],"scale":[149,173,229,243],"showed":[150],"good":[151,208,218],"model,":[156],"chi-square":[159],"interaction":[160],"statistic":[161],"42.663":[163],"(36":[164],"df,":[165],"P":[166],"=":[167],"0.206).":[168],"Overall":[169],"targeting":[170,203],"(to":[174],"patients)":[176],"good,":[178],"high":[180,224],"reliability.":[181],"CONCLUSION:":[182],"consistent":[188],"expectations":[191],"unrestricted":[194],"(partial":[195],"credit)":[196],"derivation":[197],"instrument":[206],"shows":[207],"coverage":[209],"thresholds":[211],"across":[212],"whole":[214],"construct":[215],"has":[217],"reliability":[219],"(internal":[220],"consistency)":[221],"patient":[225],"separation.":[226],"Consequently,":[227],"can":[230],"be":[231],"used":[232],"confidence":[234],"knowledge":[237],"that":[238],"it":[239],"largely":[244],"free":[245],"bias.":[247]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":5},{"year":2023,"cited_by_count":5},{"year":2022,"cited_by_count":3},{"year":2021,"cited_by_count":3},{"year":2020,"cited_by_count":7},{"year":2019,"cited_by_count":4},{"year":2018,"cited_by_count":3},{"year":2017,"cited_by_count":4},{"year":2016,"cited_by_count":5},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":6},{"year":2013,"cited_by_count":4},{"year":2012,"cited_by_count":7}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2016-06-24T00:00:00"}