{"id":"W2937971823","doi":"10.2196/mhealth.9232","title":"A Focused Review of Smartphone Diet-Tracking Apps: Usability, Functionality, Coherence With Behavior Change Theory, and Comparative Validity of Nutrient Intake and Energy Estimates","year":2019,"lang":"en","type":"review","venue":"JMIR mhealth and uhealth","topic":"Mobile Health and mHealth Applications","field":"Health Professions","cited_by":187,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"National Institute on Minority Health and Health Disparities; National Institute of Environmental Health Sciences; National Heart, Lung, and Blood Institute; National Institutes of Health","keywords":"Usability; Behavior change; Sedentary behavior; Computer science; mHealth; Tracking (education); Psychology; Smartphone application; Applied psychology; Human–computer interaction; Social psychology; Physical activity; Psychological intervention; Medicine; Multimedia; Physical medicine and rehabilitation","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"],"consensus_categories":[],"category_scores_codex":[0.004443204,0.0007822635,0.004770292,0.0002527611,0.0007497752,0.00001186468,0.0002752704,0.000623488,0.0001205968],"category_scores_gemma":[0.0002406209,0.0005828348,0.0001569649,0.0007366139,0.000649674,0.0001693543,0.0002937896,0.001302398,0.000007425266],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0002577878,"about_ca_system_score_gemma":0.003595124,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001219534,"about_ca_topic_score_gemma":0.0003806049,"domain_scores_codex":[0.9909691,0.002828019,0.003290185,0.001214673,0.0005852399,0.001112792],"domain_scores_gemma":[0.9887857,0.004269411,0.004017332,0.0008403716,0.0006438069,0.001443333],"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":[0.0003277073,0.0002708003,0.00500985,0.6121371,0.00003197457,6.03951e-7,0.0006004958,1.487171e-8,7.736038e-8,0.009415798,0.0004883851,0.3717172],"study_design_scores_gemma":[0.001937919,0.00300106,0.01805938,0.1748021,0.002108116,0.00003046107,0.0004768315,0.00001011194,4.871588e-7,0.0004954966,0.7984138,0.0006642786],"study_design_candidate":"not_applicable","study_design_consensus":null,"genre_codex":"review","genre_gemma":"review","genre_scores_codex":[0.001920317,0.9796115,0.0001913877,0.0005172014,0.0002242146,0.01621761,0.00103807,0.00006477565,0.0002149177],"genre_scores_gemma":[0.002694095,0.9643821,0.0004699332,0.002118832,0.0002300151,0.02952542,0.0004680223,0.00006185882,0.00004980057],"genre_candidate":"review","genre_consensus":"review","teacher_disagreement_score":0.7979254,"threshold_uncertainty_score":0.9996623,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.3790025921703462,"score_gpt":0.5181617546480829,"score_spread":0.1391591624777367,"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."}}