Table 2.

Comparison of postoperative outcomes between the GA and RA groups before and after propensity score matching.

	Pre-matching				Post-matching
	Total (N = 1,522)	GA (n = 640)	RA (n = 882)	p-value	GA (n = 640)	RA (n = 640)	p-value	95% CI
Mortality	11 (0.72)	6 (0.94)	5 (0.57)	0.54	6 (0.94)	4 (0.63)	0.75	0.14–2.81
Delirium	3 (0.20)	2 (0.31)	1 (0.11)	0.58	2 (0.31)	1 (0.16)	1.00	0.0085–9.60
Transfusion	1,233 (81.01)	519 (81.09)	714 (80.95)	0.94	519 (81.09)	515 (80.47)	0.78	0.74–1.26
LOS (days)	45 (33–62)	45 (33–67)	45 (32–61)	0.24	45 (33–67)	44 (32–59)	0.054	0.00–6.50
Hospital cost (won)	6,992,420 (6,237,660–8,713,860)	7,332,515 (6,328,980–9,668,620)	6,833,295 (6,170,910–8,139,150)	<0.0001	7,332,515 (6,328,980–9,668,620)	6,748,745 (6,115,870–8,089,100)	<0.0001	407,830–924,065

CI, confidence interval; GA, general anesthesia; RA, regional anesthesia; LOS, length of stay. Data are presented as absolute numbers or medians (25th–75th percentiles). ^*p < 0.05 between-group comparisons.