Table 1B.

Cohort intraoperative measures by Delirium status. Data are summarized as count (%) for categorical variables and mean (SD) or median [Q1, Q3] for numeric variables.

	Overall (N=139)	No Delirium (n=104)	Delirium (n=35)	P Value
Procedure Length (min)	151 [110, 213]	144 [110, 190]	177 [110, 244]	0.0991
Fentanyl or Hydromorphone Used/ Dose (ME)	135 (97.1%)/35 [25, 49]	102 (98.1%)/35 [25, 50]	33 (94.3%)/33.3 [25, 45]	0.4481
Midazolam Used/ Dose (mg)	41 (29.5%)/2 [1, 2]	28 (26.9%)/2 [2, 2]	13 (37.1%)/1 [1, 2]	0.5611
Propofol Used / Dose (mg)	85 (61.2%)/130 [100, 190]	63 (60.6%%)/120 [100, 200]	22 (62.9%)/142 [120, 190]	0.4481
Ketamine Used / Dose (mg)	46 (33.1%)/71 [50, 100]	33 (31.7%)/61 [35, 87]	13 (37.1%)/85 [68, 106]	0.2861
Phenylephrine Used / Dose (mg)	103 (74.1%)/1.10 [0.30, 4.18]	75 (72.1%)/0.75 [0.25, 3.33]	28 (80.0%)/1.74 [0.63, 5.32]	0.0381
Dexmedetomidine Used / Dose (mcg)	6 (%)/19 [16, 20]	4 (3.8%)/17 [12, 19]	2 (5.7%)/34 [20, 48]	0.6051
N2O used	4(2.9%)	4 (3.9%)	0 (0.0%)	0.5722
Primary Gas Used				0.0643
Desflurane	42 (30.2%)	28 (26.9%)	14 (40.0%)
Isoflurane	56 (40.3%)	40 (38.5%)	16 (45.7%)
Sevoflurane	41 (29.5%)	36 (34.6%)	5 (14.3%)
Case Average aaMAC	0.94 [0.79, 1.15]	0.96 [0.80, 1.17]	0.86 [0.76, 0.98]	0.0741
aaMAC Hours	2.17 [1.53, 3.59]	2.11 [1.53, 3.52]	2.74 [1.46, 3.74]	0.5081
Case Average BIS	48.33 (8.82)	48.88 (8.77)	46.72 (8.89)	0.2124
Case Average BIS <45	50 (36.0%)	36 (34.6%)	14 (40.0%)	0.5663
DARS	31.76 [27.03,37.94]	32.88 [28.95, 38.15]	27.92 [24.85, 36.74]	0.0151

P-value key:

¹=Wilcoxon rank sum

²=Fisher exact

³=chi-square

⁴=t-test