Key Concepts in Clinical EpidemiologyArticles in Press112247Open access Affiliations & Notes 1Data Center of the Swiss Transplant Cohort Study, University Basel & University Hospital Basel, Basel, 4031 Switzerland 2Department of Mathematics and Statistics, University of Otago, Dunedin 9016, New Zealand 3Te Pūnaha Matatini Centre of Research Excellence, University of Auckland, Auckland 1142, New Zealand Article Info Publication History: Received November 20, 2025; Revised March 9, 2026;...