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Self-reported sleep and sleep need in octogenarian patients after SAVR or TAVI at baseline and on the first five postoperative nights (N = 143).
Some patients reported fractional number of hours. These are rounded down (e.g. 4.5 becomes 4) in this graph.
PO: postoperative; SAVR: surgical aortic valve replacement; TAVI: transcatheter aortic valve implantation.
