{"id":"W4255353872","doi":"10.2196/27248","title":"Polar Vantage and Oura Physical Activity and Sleep Trackers: Validation and Comparison Study","year":2022,"lang":"en","type":"article","venue":"JMIR Formative Research","topic":"Physical Activity and Health","field":"Medicine","cited_by":48,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"Universitetet i Tromsø","keywords":"Activity tracker; Physical activity; Energy expenditure; Heart rate monitor; Heart rate; Accelerometer; Polar; Medicine; Physical therapy; Psychology; Demography; Blood pressure; Internal medicine; Computer science; 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":[0.01233049,0.0008671829,0.0006755624,0.0009413877,0.000591575,0.000876714,0.001075481,0.0008028521,0.003340299],"category_scores_gemma":[0.01549629,0.0005808865,0.001136953,0.001061682,0.0007568803,0.001031,0.001603244,0.0006228986,0.001197901],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0006976011,"about_ca_system_score_gemma":0.00122064,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.004018728,"about_ca_topic_score_gemma":0.004604331,"domain_scores_codex":[0.9932899,0.003322991,0.0006387448,0.001060403,0.001461509,0.0002264207],"domain_scores_gemma":[0.9864102,0.004314177,0.002345433,0.001770937,0.004586373,0.0005728643],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.02142894,0.003889747,0.8815925,0.0007796711,0.0008539529,0.0001627067,0.002773305,0.0008523082,0.004871992,0.000971919,0.002528448,0.07929452],"study_design_scores_gemma":[0.00403593,0.01913328,0.9609901,0.0001804799,0.0006991847,0.0006188157,0.0009576625,0.003174567,0.002046059,0.0003070889,0.007784654,0.00007208342],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9832463,0.000436338,0.007499892,0.00007066727,0.000103015,0.002940189,0.002371702,0.0000670962,0.003264848],"genre_scores_gemma":[0.9716229,0.0004065816,0.01464231,0.0001750094,0.00008495861,0.00607772,0.004894779,0.00005250647,0.002043268],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.01233049,"threshold_uncertainty_score":0.06521064,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.1393782991409792,"score_gpt":0.4948446831191355,"score_spread":0.3554663839781562,"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."}}