Table 1. Baseline clinicodemographics of pediatric Crohn's disease patients in Korea and EUROKIDS at diagnosis.

Clinicodemographics		Korea (n=255)	EUROKIDS (n=1,221)	p-value
Sex				0.062
	Male	167 (65.5)	723 (59.2)
	Female	88 (34.5)	498 (41.8)
Male-to-female ratio		1.9:1	1.45:1
Age at diagnosis (yr)		14.7 (0.8–17.9)	12.5 (0.8–17.9)
Ethnicity				<0.001
	Asian	255 (100.0)	50/1,210 (4.1)
	Caucasian	0	1,049/1,210 (86.7)
	Arab	0	43/1,210 (3.6)
	Africa-Caribbean	0	18/1,210 (1.5)
	Others	0	50/1,210 (4.1)
1st degree family history of IBD		12 (4.7)	129/1,193 (10.8)	0.003
Previous bowel resection history		4 (1.6)	N/A
Previous perianal surgery history		61 (23.9)	N/A
Height z-score		−0.3 (−1.0–0.4)	N/A
Weight z-score		−0.9 (−1.8–−0.1)	N/A
BMI z-score		−1.1 (−1.9–−0.1)	N/A

Values are presented as number (%), number only, or median (interquartile range), except for age at diagnosis which is presented as median (range).

IBD: inflammatory bowel disease, BMI: body mass index, N/A: not available.