Table 1. Logistic regression analysis of each disease according to the occurrence rates by year.

Disease	Year	OR (95% CI)	P
HSP	2017	2.16 (1.80–2.60)	<0.001
	2018	2.37 (1.97–2.84)	<0.001
	2019	1.92 (1.59–2.32)	<0.001
	2020	Reference
Intussusception	2017	2.33 (1.96–2.77)	<0.001
	2018	2.83 (2.40–3.36)	<0.001
	2019	2.72 (2.30–3.23)	<0.001
	2020	Reference
MCLS	2017	1.90 (1.72–2.11)	<0.001
	2018	1.97 (1.78–2.19)	<0.001
	2019	1.95 (1.75–2.16)	<0.001
	2020	Reference

HSP, Henoch-Schönlein Purpura; MCLS, mucocutaneous lymph node syndrome; OR, odds ratio; CI, confidence interval.