{"id":"W4414868065","doi":"10.2196/68376","title":"Real-World Performance of COVID-19 Antigen Tests: Predictive Modeling and Laboratory-Based Validation","year":2025,"lang":"en","type":"article","venue":"JMIRx Med","topic":"SARS-CoV-2 detection and testing","field":"Medicine","cited_by":3,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"","keywords":"Observer (physics); Probability density function; Function (biology); Population; Model validation; Pattern recognition (psychology)","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":[],"consensus_categories":[],"category_scores_codex":[0.0003237036,0.000096467,0.0001983971,0.0002888766,0.00008729642,0.00001035462,0.00003923443,0.00005812114,0.00001023296],"category_scores_gemma":[0.0008018916,0.00009020366,0.00002591901,0.0006417819,0.00005089135,0.00007442156,0.00001735705,0.000125126,0.000002188879],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0001111372,"about_ca_system_score_gemma":0.0004522959,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0001404998,"about_ca_topic_score_gemma":0.00002800045,"domain_scores_codex":[0.9992262,0.00004191429,0.0002476973,0.0001949103,0.0001679,0.0001214037],"domain_scores_gemma":[0.999277,0.0001552459,0.00009218381,0.0001778361,0.0002363238,0.00006139474],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"simulation_or_modeling","study_design_scores_codex":[0.0008534184,0.0001665033,0.4749075,0.001167307,0.0001003001,0.00001147865,0.0006195832,0.002658838,0.5167747,0.0001795055,0.0008757138,0.001685145],"study_design_scores_gemma":[0.002169248,0.0001921069,0.01395444,0.0003349091,0.00007550288,0.000002301682,0.0001524286,0.5003474,0.4804974,0.00006359426,0.002106244,0.0001043879],"study_design_candidate":"bench_or_experimental","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9926671,0.00005821167,0.003130809,0.0007512346,0.00009428284,0.0003667198,0.00001018925,0.0001492575,0.002772222],"genre_scores_gemma":[0.9973795,0.00001702511,0.001078754,0.001203435,0.00004267164,0.00003381208,0.00001128785,0.00001075463,0.0002227286],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.4976886,"threshold_uncertainty_score":0.3678398,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.03688911653021436,"score_gpt":0.3461228153866535,"score_spread":0.3092336988564391,"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."}}