Table 1.

Sample Characteristics

	Total Sample N=300	Nested Cohort† n=63
Age at Index Surgery, Mean (SD)	76.9 (5)	77.4 (6)
Age 80+	81 (27)	16 (25)
Female Sex	166 (55)	36 (57)
Non-White or Hispanic	21 (7)	5 (8)
English as a Second Language (ESL)	20 (7)	2 (3)
Currently Married/Living with Partner	185 (62)	34 (54)
Education
0–12 Years	86 (29)	16 (25)
13–16 Years	129 (43)	28 (44)
17+ Years	85 (28)	19 (30)
Surgery Type
Orthopedic	253 (84)	52 (83)
Vascular	16 (5)	7 (11)
Gastrointestinal	31 (11)	4 (6)

Note. Values are N (%) unless otherwise specified.

^†The nested cohort consisted of patients with evidence of confusion in the chart.