{"id":"W3037734338","doi":"10.2196/18694","title":"Reliability and Validity of Commercially Available Wearable Devices for Measuring Steps, Energy Expenditure, and Heart Rate: Systematic Review","year":2020,"lang":"en","type":"review","venue":"JMIR mhealth and uhealth","topic":"Physical Activity and Health","field":"Medicine","cited_by":741,"is_retracted":false,"has_abstract":true,"ca_institutions":"Dalhousie University; Memorial University of Newfoundland","funders":"","keywords":"Wearable computer; Reliability (semiconductor); Criterion validity; Validity; Wearable technology; Operationalization; Computer science; Activity tracker; Construct validity; Energy expenditure; Population; Applied psychology; Reliability engineering; Medicine; Psychology; Engineering; Psychometrics; Clinical psychology; Environmental health; Embedded system","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":true,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":["metaepi_narrow"],"consensus_categories":[],"category_scores_codex":[0.00289986,0.0005484668,0.007333899,0.000114117,0.000347548,0.00003096114,0.0001251424,0.0003339296,0.00001174206],"category_scores_gemma":[0.0005078438,0.0004056043,0.0002684078,0.0002744885,0.0001458383,0.0001605011,0.0001061184,0.000672586,0.000004841519],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0001961712,"about_ca_system_score_gemma":0.002025982,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00047076,"about_ca_topic_score_gemma":0.00008958556,"domain_scores_codex":[0.9951838,0.001212556,0.001733749,0.0008636827,0.0003584977,0.0006477086],"domain_scores_gemma":[0.9954824,0.00146706,0.001179014,0.0005423423,0.0001625988,0.001166531],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"systematic_review","study_design_gemma":"not_applicable","study_design_scores_codex":[0.00007607291,0.0002290293,0.00001659994,0.9743395,0.0000513989,0.000001935809,0.00005517668,7.586248e-9,4.860488e-7,0.0002026204,0.002149689,0.02287753],"study_design_scores_gemma":[0.0006914248,0.001324763,0.0002013146,0.4935333,0.002961653,0.00008688863,0.00002613172,0.00002378292,0.000001109452,0.0001285179,0.5007175,0.0003035763],"study_design_candidate":"systematic_review","study_design_consensus":null,"genre_codex":"review","genre_gemma":"review","genre_scores_codex":[0.0001764281,0.9917566,0.00002634125,0.001382891,0.00009554305,0.006220761,0.0001635384,0.0000504643,0.0001274387],"genre_scores_gemma":[0.001053401,0.9944535,0.0003078728,0.002993751,0.0002419699,0.0007307406,0.00007975275,0.00005724347,0.00008174806],"genre_candidate":"review","genre_consensus":"review","teacher_disagreement_score":0.4985678,"threshold_uncertainty_score":0.9998396,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.2056519298097399,"score_gpt":0.4191574835142117,"score_spread":0.2135055537044718,"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."}}