{"id":"W3088573653","doi":"10.1016/j.cjca.2020.09.010","title":"Distorting Effect of Immortal Time Bias on the Association Between Catheter Ablation for Atrial Fibrillation and Incident Stroke: Caveat Emptor","year":2020,"lang":"en","type":"review","venue":"Canadian Journal of Cardiology","topic":"Health Systems, Economic Evaluations, Quality of Life","field":"Economics, Econometrics and Finance","cited_by":2,"is_retracted":false,"has_abstract":false,"ca_institutions":"McGill University; Université de Montréal; Montreal Heart Institute","funders":"Fonds de Recherche du Québec - Santé","keywords":"Medicine; Atrial fibrillation; Hazard ratio; Stroke (engine); Cardiology; Catheter ablation; Observational study; Confidence interval; Internal medicine; Ablation; Proportional hazards model","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":true,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":["metaresearch"],"consensus_categories":["metaresearch"],"category_scores_codex":[0.2006751,0.001507802,0.006620979,0.003117618,0.0008402002,0.004145246,0.007937446,0.006195312,0.0109049],"category_scores_gemma":[0.3842725,0.0009878074,0.009463271,0.004185158,0.004466851,0.006088858,0.003069039,0.008329112,0.001315819],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.001580437,"about_ca_system_score_gemma":0.005869369,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.008517743,"about_ca_topic_score_gemma":0.01033799,"domain_scores_codex":[0.8832941,0.07343239,0.01808252,0.01018984,0.01394256,0.001058524],"domain_scores_gemma":[0.471353,0.4758155,0.01499999,0.02483941,0.01231357,0.0006784492],"domain_codex":null,"domain_gemma":"methods","domain_candidate":"methods","domain_consensus":null,"study_design_codex":"design_other","study_design_gemma":"theoretical_or_conceptual","study_design_scores_codex":[0.003452307,0.0001426683,0.04124248,0.1079652,0.1031597,0.001152622,0.001930903,0.00401722,0.0005067557,0.09904261,0.05536458,0.582023],"study_design_scores_gemma":[0.003423559,0.001369941,0.05503749,0.09565456,0.1401403,0.005515089,0.001277087,0.007770439,0.002088223,0.3460734,0.3410385,0.0006112888],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":null,"genre_codex":"review","genre_gemma":"review","genre_scores_codex":[0.006933148,0.876183,0.05105566,0.04473903,0.00916903,0.0005177765,0.004526672,0.0002347423,0.006640905],"genre_scores_gemma":[0.3330251,0.4617549,0.06475885,0.0974625,0.02748437,0.002589968,0.003786658,0.0005361657,0.008601564],"genre_candidate":"review","genre_consensus":"review","teacher_disagreement_score":0.7993249,"threshold_uncertainty_score":0.98571,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.25466194666389,"score_gpt":0.398869838552013,"score_spread":0.144207891888123,"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."}}