{"id":"W4283704189","doi":"10.1136/annrheumdis-2022-eular.1005","title":"POS1113 CONSTRUCT VALIDITY, RELIABILITY, RESPONSIVENESS AND INTERVAL SCALE TRANSFORMATION OF THE WESTERN ONTARIO AND MCMASTER UNIVERSITIES OSTEOARTHRITIS INDEX (WOMAC) IN PATIENTS UNDERGOING KNEE ARTHROPLASTY","year":2022,"lang":"en","type":"article","venue":"Annals of the Rheumatic Diseases","topic":"Osteoarthritis Treatment and Mechanisms","field":"Medicine","cited_by":0,"is_retracted":false,"has_abstract":false,"ca_institutions":"","funders":"National Medical Research Council; Pfizer","keywords":"WOMAC; Rasch model; Osteoarthritis; Medicine; Physical therapy; Intraclass correlation; Arthroplasty; Confidence interval; Oxford knee score; Ordinal data; Differential item functioning; Psychometrics; Statistics; Surgery; Mathematics; Item response theory; Internal medicine; Clinical psychology","routes":{"ca_aff":false,"ca_fund":false,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.003511609,0.0003361182,0.0003841697,0.001283669,0.000543241,0.0009440486,0.0004625655,0.0003901858,0.001679991],"category_scores_gemma":[0.01871372,0.0002169355,0.001021298,0.001327119,0.0006411569,0.0006297409,0.001000217,0.0006856567,0.0004841711],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000795227,"about_ca_system_score_gemma":0.001056726,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.01479228,"about_ca_topic_score_gemma":0.01731035,"domain_scores_codex":[0.9977435,0.0007117318,0.000325034,0.0001325284,0.0008948666,0.00019227],"domain_scores_gemma":[0.9937411,0.0023837,0.001396962,0.0003918173,0.001765672,0.0003207575],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0003147042,0.00008069172,0.9919851,0.00002084933,0.0001033445,0.0000315504,0.000399903,0.0001607732,0.0001842782,0.00006922767,0.0001960167,0.006453409],"study_design_scores_gemma":[0.00002465794,0.0002622256,0.9979177,0.000009937517,0.00004501189,0.00005129907,0.0004839733,0.0007005341,0.0000986298,0.0000872357,0.0003099335,0.000008906149],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9958401,0.0001491235,0.0003292114,0.00008291197,0.00003349059,0.00005987871,0.0004257101,0.000008640327,0.003070951],"genre_scores_gemma":[0.9990361,0.00004072876,0.000184806,0.00001683399,0.00001171125,0.00002975438,0.0003567484,0.000003578309,0.0003199403],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.01479228,"threshold_uncertainty_score":0.02941239,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01762482464767497,"score_gpt":0.2418191290344519,"score_spread":0.2241943043867769,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}