{"id":"W4406012231","doi":"10.2196/67322","title":"A Smartphone-Based Timed Up and Go Test Self-Assessment for Older Adults: Validity and Reliability Study","year":2025,"lang":"en","type":"article","venue":"JMIR Aging","topic":"Balance, Gait, and Falls Prevention","field":"Health Professions","cited_by":7,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"","keywords":"Preprint; Test (biology); Reliability (semiconductor); Concurrent validity; Psychology; Applied psychology; Reliability engineering; Clinical psychology; Computer science; Psychometrics; World Wide Web; Engineering","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":[0.00421268,0.0004086681,0.0005388383,0.0009559924,0.0003508954,0.000704876,0.0003812299,0.0006468198,0.000786533],"category_scores_gemma":[0.01206997,0.0002427651,0.0008443563,0.0005751117,0.0002944309,0.0006610845,0.0006742451,0.0004892132,0.0004374697],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0003135914,"about_ca_system_score_gemma":0.0005065497,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.002009211,"about_ca_topic_score_gemma":0.003881197,"domain_scores_codex":[0.997798,0.0005636394,0.000305565,0.0003237474,0.0008991903,0.0001099193],"domain_scores_gemma":[0.9939491,0.00151451,0.001132573,0.0003280418,0.002834435,0.0002413556],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0005186617,0.0005764609,0.9659417,0.0002291025,0.0002593095,0.00009833064,0.001039986,0.0001245262,0.001437751,0.00007093624,0.0004109014,0.02929232],"study_design_scores_gemma":[0.00006455851,0.002166745,0.9936802,0.00008137862,0.0001921584,0.0005683693,0.0006488178,0.001320429,0.0003655039,0.00004605818,0.0008502903,0.00001543097],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9971136,0.0003874136,0.0009402671,0.00004817487,0.00002995065,0.0002802748,0.0002454002,0.00001457389,0.0009404006],"genre_scores_gemma":[0.9960799,0.0002527108,0.002403174,0.00008413677,0.00003581078,0.0002742386,0.0004169545,0.00000698917,0.0004461315],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.00421268,"threshold_uncertainty_score":0.02227902,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01848413976769426,"score_gpt":0.3867120910454377,"score_spread":0.3682279512777435,"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."}}