Prevalence of decisional regret among patients who underwent allogeneic hematopoietic stem cell transplantation and associations with quality of life and clinical outcomes.

Among patients who underwent alloHCT and lived to 100 days, the majority did not report regretting their transplantation. Regret was found to be related to disease recurrence. Social connectedness may serve as a protective factor against later regret. Future work should explore regret in other patient groups and use qualitative methods to inform best practices for reducing regret.