Table 4.

Comparison of postoperative outcomes between dementia and non-dementia group in patients over 85 years of age with acute cholecystitis

	Total (n = 59)	Patients with dementia (n = 22)	Patients without dementia (n = 37)	p value
Postoperative complications (Clavien grade > 1), n (%)	7 (11.9)	3 (13.6)	4 (10.8)	0.525
Delirium, n (%)	21 (35.6)	14 (63.6)	7 (18.9)	0.001
Postoperative hospital stay, days*	9.0 (4–57)	12.0 (4–37)	7.0 (4–57)	0.079
Routine discharge, n (%)	53 (89.8)	18 (81.8)	35 (94.6)	0.131

Continuous parameters are presented as median (range)*, and categorical parameters are presented as n (%)

Routine discharge was defined as a condition wherein discharge disposition was the same as the preoperative destination