{"id":"W2765080021","doi":"10.2196/mhealth.8233","title":"Fitbit Charge HR Wireless Heart Rate Monitor: Validation Study Conducted Under Free-Living Conditions","year":2017,"lang":"en","type":"article","venue":"JMIR mhealth and uhealth","topic":"Non-Invasive Vital Sign Monitoring","field":"Engineering","cited_by":105,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"National University of Singapore","keywords":"Heart rate; Activity tracker; Intraclass correlation; Heart rate monitor; Medicine; Physical therapy; Physical activity; Statistics; Blood pressure; Internal medicine; Mathematics; Reproducibility","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":"codex-gemma-dda1882f352a","candidate_categories":["metaepi_narrow","sts"],"consensus_categories":[],"category_scores_codex":[0.0005682439,0.0002917018,0.000401505,0.0001571347,0.00133062,0.0002413624,0.0002983976,0.0001310701,0.00005103298],"category_scores_gemma":[0.00008429219,0.000309674,0.00004510732,0.0001250119,0.00008590796,0.0005826258,0.0001097393,0.0004247543,0.00006345818],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0002244281,"about_ca_system_score_gemma":0.00011613,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0004381916,"about_ca_topic_score_gemma":0.0001122564,"domain_scores_codex":[0.9980454,0.0001546674,0.0004561238,0.0003958321,0.000256583,0.0006913723],"domain_scores_gemma":[0.9982424,0.0001760335,0.0001804565,0.0008002957,0.0000946642,0.0005060948],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0001105522,0.001160246,0.8326696,0.004572847,0.000292898,0.00005161497,0.007614319,0.0005218519,0.1312849,0.002486018,0.01482298,0.004412195],"study_design_scores_gemma":[0.001565068,0.0003252692,0.9903794,0.0002536996,0.00006276717,0.00001296567,0.001265242,0.0005385776,0.004359466,0.0005010313,0.0002341013,0.0005024342],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9957001,0.0002238677,0.000167424,0.0005648932,0.001446132,0.001022744,0.00008544383,0.0003659186,0.0004234626],"genre_scores_gemma":[0.9985546,0.0001533428,0.00009558879,0.0001217167,0.0006921677,0.0001878323,0.0000260019,0.00007199759,0.00009668873],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.1577098,"threshold_uncertainty_score":0.9999695,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.06359058231542267,"score_gpt":0.3581095180405992,"score_spread":0.2945189357251765,"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."}}