Evidence Use and Identifier-Conditioned Prior Knowledge in Large Language Model Classification of Oncology Trials Assessed Through Progressive Content Removal and Counterfactual Testing: Comparative Analysis

Paul Windisch   ^{1, 2} , MD ;   Carole Koechli   ² , MD ;   Fabio Dennstädt   ² , MD ;   Daniel M Aebersold   ² , MD ;   Daniel R Zwahlen   ¹ , MD ;   Robert Förster   ^{1, 2} , MD ;   Christina Schröder   ^{1, 2} , MD

¹ Department of Radiation Oncology, Kantonsspital Winterthur, Winterthur, Zurich, Switzerland

² Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland