Table 2.

Complications after total hip or knee arthroplasty in patients with and without postoperative delirium. Values are count (%)

Adverse event	Non-POD cohort n = 10,001	POD cohort n = 139	p-value
Reoperation within 90 days	503 (5.0)	17 (12)	< 0.001
Readmission within 90 days	495 (4.9)	21 (15)	< 0.001
Surgical complications	215 (2.1)	10 (7)	< 0.001
Non-surgical complications	370 (3.7)	11 (8)	0.009
Clavien–Dindo IV°	177 (1.8)	14 (10)	< 0.001
Transfusion	185 (1.8)	20 (14)	< 0.001
PROM subgroup	4,139	50
Responder rate	3,602 (87)	38 (76)	0.02

POD = postoperative delirium.