Table 3. Risk factors of poor outcomes according to univariable and multivariable analyses.

Variables	No. (%a)	Univariable model		Multivariable model
		Poor outcome (n = 59)		Poor outcome
		No. (%b)	P value	aOR	95% CI
Age, < 1 yrc	37 (31.1)	26 (70.3)	0.002	3.643*	1.543–8.599
Age, 12–17 yrc	27 (22.7)	9 (33.3)	0.055	0.497	0.197–1.254
Sex, male	71 (59.7)	30 (42.3)	0.052	0.455	0.207–1.002
Underlying disease	34 (28.6)	21 (61.8)	0.093	1.938	0.819–4.584

The poor outcome group includes patients with ventilator, extracorporeal membrane oxygenation care, heart transplantation, and/or fatal cases.

aOR = adjusted odds ratio, CI = confidence interval.

^aProportion of patients with only myocarditis (n = 119) excluding pericarditis; ^bProportion of patients with the poor outcome by each variable; ^cMultivariable model was separately conducted for each age group.

^*P < 0.01.