Table 1. Numbers of Kawasaki disease (KD) patients and patients with refractory KD, and proportions of patients with refractory KD

Year	No. of KD patients	No. of patients with refractory KD	Proportion of patients with refractory KD (%)
2009	3,942	477	12.1
2010	4,635	538	11.6
2011	4,455	610	13.7
2012	4,584	468	10.2
2013	5,181	523	10.1
2014	5,144	576	11.2
2015	5,235	780	14.9
2016	4,952	753	15.2
2017	4,577	856	18.7
Total	42,705	5,581	13.1

KD: Kawasaki disease.