{"id":"W4414533744","doi":"10.1503/cjs.001224","title":"Trends and variations in Canadian thoracic surgical volume and perioperative practice during the COVID-19 pandemic","year":2025,"lang":"en","type":"article","venue":"Canadian Journal of Surgery","topic":"COVID-19 and healthcare impacts","field":"Medicine","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Saskatchewan; Horizon Health Network; McGill University Health Centre; Ottawa Hospital; University of Ottawa; Dalhousie University","funders":"","keywords":"Pandemic; Perioperative; Coronavirus disease 2019 (COVID-19); Prioritization; Cardiothoracic surgery; Event (particle physics); Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":true,"about_ca":true,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0009567518,0.0001839085,0.0001684631,0.00137669,0.00168983,0.00134952,0.001240483,0.0004663103,0.002723007],"category_scores_gemma":[0.005081423,0.0001792986,0.0003245317,0.003586679,0.0008375651,0.0004755773,0.001058715,0.0006616375,0.0001491773],"about_ca_system_candidate":true,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.02981245,"about_ca_system_score_gemma":0.03889983,"about_ca_topic_candidate":true,"about_ca_topic_consensus":true,"about_ca_topic_score_codex":0.9891455,"about_ca_topic_score_gemma":0.9912512,"domain_scores_codex":[0.9982021,0.0001271763,0.00009917968,0.0001918556,0.0007036385,0.0006760883],"domain_scores_gemma":[0.9944168,0.0004208022,0.001398278,0.00008337221,0.002352198,0.001328646],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.00007406706,0.00002104401,0.973546,0.0001397438,0.00003312364,0.0001660412,0.004840814,0.000371356,0.000381684,0.0003453679,0.003599835,0.01648101],"study_design_scores_gemma":[0.000002368159,0.00001785543,0.990882,0.00006105228,0.000006546166,0.00008026602,0.006067795,0.0003067509,0.00006906883,0.00002221249,0.002470722,0.00001327301],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9829234,0.001890146,0.0002985244,0.003467719,0.00004652824,0.00004690014,0.004467273,0.00003290547,0.006826507],"genre_scores_gemma":[0.997259,0.0008627737,0.0002438053,0.0002632546,0.0000124743,0.00001347422,0.0008860242,0.000006222978,0.00045299],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.9701875,"threshold_uncertainty_score":0.2163055,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.07926694203998949,"score_gpt":0.4042045978567628,"score_spread":0.3249376558167733,"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."}}