{"id":"W4408615009","doi":"10.1002/acr.25526","title":"Placebo Effect Sizes in Clinical Trials of Knee Osteoarthritis Using Intra‐Articular Injections of Biologic Agents","year":2025,"lang":"en","type":"review","venue":"Arthritis Care & Research","topic":"Pain Management and Placebo Effect","field":"Neuroscience","cited_by":4,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"","keywords":"Osteoarthritis; Medicine; Placebo; Clinical trial; Intra articular; Physical therapy; Physical medicine and rehabilitation; Internal medicine; Alternative medicine; Pathology","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":["metaresearch"],"consensus_categories":["metaresearch"],"category_scores_codex":[0.2673047,0.003613025,0.01711868,0.007258894,0.0009519595,0.005998115,0.003805718,0.006473173,0.007960956],"category_scores_gemma":[0.5203317,0.002163596,0.02851572,0.006543854,0.006483417,0.006135018,0.003587824,0.005926163,0.0007559381],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.002731863,"about_ca_system_score_gemma":0.002435174,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001076026,"about_ca_topic_score_gemma":0.001155427,"domain_scores_codex":[0.4821166,0.4011415,0.07417883,0.01561684,0.02579548,0.001150762],"domain_scores_gemma":[0.307181,0.6523298,0.02652347,0.007602195,0.005606087,0.0007574084],"domain_codex":null,"domain_gemma":"methods","domain_candidate":"methods","domain_consensus":null,"study_design_codex":"systematic_review","study_design_gemma":"systematic_review","study_design_scores_codex":[0.06458488,0.0002270074,0.008743733,0.4591491,0.3843042,0.0004067807,0.000812817,0.002391197,0.001047804,0.006603667,0.003277649,0.06845118],"study_design_scores_gemma":[0.1277991,0.01523025,0.03882023,0.1206192,0.6110654,0.001133833,0.0008532755,0.0063803,0.00328191,0.04256973,0.03184924,0.0003974513],"study_design_candidate":"systematic_review","study_design_consensus":"systematic_review","genre_codex":"review","genre_gemma":"review","genre_scores_codex":[0.02368745,0.9050821,0.03207473,0.004066969,0.007038374,0.01774548,0.002908487,0.0003521366,0.007044189],"genre_scores_gemma":[0.7761077,0.1057406,0.04036661,0.005779667,0.003126462,0.0637697,0.002860958,0.0002907794,0.001957476],"genre_candidate":"review","genre_consensus":"review","teacher_disagreement_score":0.7326952,"threshold_uncertainty_score":0.9035437,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.3467747032576311,"score_gpt":0.5465153455554299,"score_spread":0.1997406422977988,"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."}}