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MMSE scores of the NPOD and POD groups during the perioperative period.
Note: No differences in the MMSE scores were found between the two groups at T0 (P=0.46), but the MMSE scores after surgery were lower in the POD than that in NPOD group (P<0.01).
Abbreviations: MMSE, Mini-Mental State Examination; NPOD, no POD; POD, postoperative delirium; T0, prior to surgery.
