Effect of the preoperative physical status on postoperative nausea and vomiting risk: a matched cohort study

Table 5 Number and percentages of monitoring and use of vasopressors or inotropes before propensity score matching

		ASA-PS 1	ASA-PS 2	ASA-PS 3	ASD (ASA-PS 1 vs. 2/1 vs. 3/2 vs. 3)
Original data analysis	IAM	5292 (9.5)	21,406 (25.8)	17,693 (71.4)	0.73/1.90/1.55
	CVP	624 (1.1)	4748 (5.7)	4381 (17.7)	0.98/0.36/0.77
	IUC	12,989 (23.2)	30,053 (36.3)	13,732 (55.4)	0.39/0.86/0.46
	VI	16,563 (29.6)	36,423 ( 44.0)	17,080 (68.9)	0.39/1.00/0.60
Sensitivity analysis	IAM	3163 (10.0)	23,488 (22.0)	17,740 (70.9)	0.52/1.86/1.23
	CVP	381 (1.2)	4981 (4.7)	4390 (17.5)	0.74/1.67/0.88
	IUC	8708 (27.6)	34,246 (32.0)	13,820 (55.2)	0.12/0.73/0.55
	VI	9823 (31.1)	43,076 (40.3)	17,168 (68.9)	0.23/0.98/0.66

ASA American Society of Anesthesiologists, PS physical status, IAM invasive arterial monitoring, CVP central venous pressure monitoring, IUC indwelling urinary catheterization, VI use of vasopressors or inotropes, ASD absolute standardized difference

ISSN: 2047-0525