{"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":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.004297847,0.0009404714,0.0005924228,0.0004833212,0.0004953055,0.0004354929,0.0008305605,0.0009381353,0.001003466],"category_scores_gemma":[0.00618394,0.0002980781,0.0005739576,0.0002800846,0.0007338057,0.0006658832,0.0007197861,0.000514844,0.0007100418],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0002728571,"about_ca_system_score_gemma":0.0004649823,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.002160373,"about_ca_topic_score_gemma":0.002986848,"domain_scores_codex":[0.997122,0.001207681,0.0002615681,0.0006233438,0.0006422225,0.0001431083],"domain_scores_gemma":[0.9951994,0.001264669,0.0005611904,0.0006314106,0.001988238,0.0003551253],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.00694165,0.0182027,0.8149866,0.0008685333,0.0008039426,0.0009282857,0.005047442,0.002567337,0.08862825,0.000270351,0.001638194,0.05911664],"study_design_scores_gemma":[0.0006269275,0.03823879,0.9376534,0.00006213078,0.0003137208,0.001586474,0.0009848709,0.006673099,0.01177401,0.00007809411,0.001954005,0.00005459652],"study_design_candidate":"bench_or_experimental","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9948032,0.00005845742,0.003783133,0.00002162162,0.00001805947,0.0005270441,0.0003022301,0.00004428343,0.0004418411],"genre_scores_gemma":[0.9894203,0.00009232319,0.007623392,0.0001544937,0.00002957921,0.0008399755,0.001268759,0.00002229088,0.0005488856],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.004297847,"threshold_uncertainty_score":0.02272952,"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."}}