Comparison of Two Symptom Checkers (Ada and Symptoma) in the Emergency Department: Randomized, Crossover, Head-to-Head, Double-Blinded Study

Johannes Knitza   ^{1, 2, 3, 4} , MD ;   Ragip Hasanaj   ⁵ , BA ;   Jonathan Beyer   ⁵ ;   Franziska Ganzer   ⁵ ;   Anna Slagman   ⁶ , Dr rer medic ;   Myrto Bolanaki   ⁶ , MD ;   Hendrik Napierala   ⁷ , MD ;   Malte L Schmieding   ⁸ , MD ;   Nizam Al-Zaher   ^{5, 9} , MD ;   Till Orlemann   ^{3, 9} , MD ;   Felix Muehlensiepen   ^{4, 10} , Dr rer medic ;   Julia Greenfield   ¹ , PhD ;   Nicolas Vuillerme   ^{4, 11, 12} , PhD ;   Sebastian Kuhn   ¹ , MD ;   Georg Schett   ^{2, 3} , MD ;   Stephan Achenbach   ⁵ , MD ;   Katharina Dechant   ⁵ , MD

¹ Institute for Digital Medicine, University Hospital Giessen, Philipps University, Marburg, Germany

² Department of Internal Medicine 3, Friedrich-Alexander University Erlangen-Nürnberg, Universitätsklinikum Erlangen, Erlangen, Germany

³ Deutsches Zentrum für Immuntherapie, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany

⁴ Université Grenoble Alpes, Grenoble, France

⁵ Department of Cardiology, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany

⁶ Emergency and Acute Medicine and Health Services Research in Emergency Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany

⁷ Institute of General Practice and Family Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany

⁸ Institute of Medical Informatics, Charité - Universitätsmedizin Berlin, Berlin, Germany

⁹ Department of Medicine 1, Friedrich-Alexander University Hospital Erlangen, University Erlangen-Nuremberg, Erlangen, Germany

¹⁰ Centre for Health Services Research Brandenburg, Brandenburg Medical School, Rüdersdorf, Germany

¹¹ Institut Universitaire de France, Paris, France

¹² Orange Labs & Université Grenoble Alpes, Grenoble, France