Daytime dysfunction may be associated with postoperative delirium in patients undergoing total hip/knee replacement: The PNDABLE study oleh Xu Lin PhD, Ming‐Jing Pan PhD, Xiao‐Yue Wu MD, Si‐Yu Liu MD, Fei Wang MD, Xin‐Hui Tang MD, Jia‐Han Wang MD, Bin Wang PhD, Yan‐Lin Bi PhD