Objective: To compare outcomes of single(SLT) versus bilateral(BLT) lung transplantation among dually listed recipients hypothetically eligible for either treatment. Summary Background Data: Considerable debate remains regarding the added benefit of BLT versus SLT. Prior analyses were confounded by significant selection bias or limited in generalizability to the contemporary era; a randomized trial remains unlikely due to ethical concerns. Methods: Within the Organ Procurement and Transplantatio