Study population
DISEASES
From January 2015 to November 2020, patients under 2 years old with a first or second admission diagnosis code of KD (International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) 446.1 and ICD-10 M303), and subsequently received treatment with intravenous IVIG (The Anatomical Therapeutic Chemical (ATC) Classification System code J06BA02) were enrolledCharacteristics of two brands of intravenous immunoglobulin (IVIG).PEG, Polyethylene glycol fractionation; Ig MWD, IgG, Molecular weight density.