Table 1.

Characteristics of emergency critical care centers based on data from the Japanese Ministry of Health, Labour and Welfare (n = 259)

	Analyzed centers n = 136	Excluded centers n = 123
Case volume at each center, median (IQR)	180.5 (109.5–298.0)	86 (44–189)
Number of deaths at each center, median (IQR)	12 (7–20)	5 (2–12)
Total evaluation score at each center, median (IQR)	73 (64.0–83.5)	66 (57–74)
Subtotal patient care score at each center, median (IQR)	61.5 (52–72)	54 (46–62)
Total case volume; (all centers), n	30,183	16,521
Total deaths (all centers), n (%)	2,034 (6.7)	927 (5.6)

IQR, interquartile range.