{"id":"W4416660108","doi":"10.2196/77796","title":"Associations Between Both Smartphone Addiction and Objectively Measured Smartphone Use and Sleep Quality and Duration Among University Students: Cross-Sectional Study","year":2025,"lang":"en","type":"article","venue":"JMIR Mental Health","topic":"Impact of Technology on Adolescents","field":"Social Sciences","cited_by":5,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"","keywords":"Smartphone addiction; Sleep quality; Smartphone application; Duration (music); Sleep (system call); Smartphone app; Behavioral addiction","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":[0.001110882,0.0002976192,0.0004904661,0.0008082049,0.0005524707,0.000645052,0.000429479,0.0005322856,0.001541745],"category_scores_gemma":[0.002171722,0.0004124427,0.0006508299,0.001210238,0.0002981383,0.0005681656,0.0005970354,0.0006979383,0.0002441327],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0003976528,"about_ca_system_score_gemma":0.00056425,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.009703957,"about_ca_topic_score_gemma":0.01526526,"domain_scores_codex":[0.9993314,0.0001355581,0.0001232067,0.0001819071,0.0001221192,0.0001059653],"domain_scores_gemma":[0.9983234,0.0002421396,0.0006628355,0.0001596345,0.0002954266,0.0003166235],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.00002703261,0.00004034367,0.9989461,0.00002057931,0.00005835341,0.0000213527,0.00009313571,0.000009260717,0.00008891625,0.000007918037,0.00005026121,0.000636749],"study_design_scores_gemma":[0.000002414891,0.00006319447,0.9994696,0.00001082155,0.0000382252,0.00005677874,0.0001634368,0.00007171635,0.00002078179,0.00000921664,0.00009068711,0.000003050977],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9988796,0.0003930112,0.00009333765,0.0000409727,0.000005958768,0.00001747925,0.0003533555,0.000002734744,0.0002136052],"genre_scores_gemma":[0.9992535,0.0001609954,0.0001149528,0.00005450537,0.00001054461,0.00002181499,0.0002564089,0.000001340633,0.0001258509],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.009703957,"threshold_uncertainty_score":0.01929498,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.04355046928403187,"score_gpt":0.3955000437439063,"score_spread":0.3519495744598744,"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."}}