{"id":"W4413755655","doi":"10.2196/71530","title":"Principal Component Analysis of Stair Negotiation and Floor Transition Kinematics in Older Adults With and Without Functional Disability: Cross-Sectional Study","year":2025,"lang":"en","type":"article","venue":"JMIR Aging","topic":"Balance, Gait, and Falls Prevention","field":"Health Professions","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"Fundação para a Ciência e a Tecnologia; European Commission","keywords":"Negotiation; Physical medicine and rehabilitation; Component (thermodynamics); Kinematics; Cross-sectional study; Principal component analysis; Psychology; Transition (genetics); Medicine; Mathematics; Sociology; Statistics; Physics","routes":{"ca_aff":false,"ca_fund":false,"ca_venue":true,"about_ca":false,"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":[0.0008100978,0.0003554572,0.0003680349,0.0008192179,0.00041509,0.0004434425,0.0001869745,0.0004138898,0.001321174],"category_scores_gemma":[0.001839085,0.0002991348,0.0005168085,0.0008149854,0.0002049135,0.0003610248,0.0004148929,0.0003435768,0.0002816353],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000137853,"about_ca_system_score_gemma":0.0002368565,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.002576979,"about_ca_topic_score_gemma":0.003676309,"domain_scores_codex":[0.9996318,0.00008948206,0.00004989878,0.00008218464,0.00008103906,0.00006562994],"domain_scores_gemma":[0.9991818,0.0001403699,0.0003072133,0.00005447335,0.0001926572,0.0001235025],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.00006145066,0.00005377716,0.9980727,0.00001059387,0.00006007497,0.00002740408,0.0001746446,0.00001686158,0.0001836652,0.000006352632,0.00004145341,0.00129103],"study_design_scores_gemma":[0.000002330774,0.0001152633,0.9994574,0.00000242027,0.00001289799,0.00007109681,0.000210224,0.00005758622,0.00001481958,0.000005852038,0.00004899216,0.000001216479],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9996068,0.000089638,0.0001032692,0.000009214618,0.000002541654,0.00001052918,0.00008992064,0.00000165737,0.00008656998],"genre_scores_gemma":[0.999516,0.00006763617,0.0001409301,0.000006607439,0.000003494466,0.00001389591,0.0001576198,9.936109e-7,0.00009278615],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.002576979,"threshold_uncertainty_score":0.005124032,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.0196020073032058,"score_gpt":0.3653599329654474,"score_spread":0.3457579256622416,"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."}}