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Kawasaki disease (KD) is a medium-sized-vessel vasculitis that affects mostly children. The 2016 Healthcare Cost and Utilization Project Kid's Inpatient Database (HCUP KID) was used in weighted form to investigate differences in gender, month of year, race, region, total charges, and household income in the United States. 5503 weighted cases were found. It was more common in males (3345, 60.8%) than females (2158, 39.2%) (p < 0.01). Most admitted KD patients were white (1913, 38.1%). A higher prevalence of Kawasaki disease was seen among patients of Asian or Pacific Islander background (0.2%). The southern regions of the United States reported the highest rate of admission with 2036 patients (37%). The median age on admission was 2 years (interquartile range [IQR] of 1-5, p < 0.01) and the median charge was $32,170 (IQR: $20,825-$50,502.05) (p < 0.01). Most admissions of Kawasaki disease were recorded in winter with a peak in March (623, 11.3%) (p < 0.01). [ABSTRACT FROM AUTHOR]

Juvenile arthritis (JA) is an autoimmune condition affecting children. We used the 2017 National Inpatient Sample (NIS) to evaluate the impact of JA in the United States. The admission data were converted to weighted form and patients between the ages of 0 and 18 (inclusive) were used in our study. 560 weighted cases were found in 2017. It was more common in females than males (340 females, 220 males), Whites (235 cases), and Medicaid covered 61.6% of all patients with JA (345 cases). The total hospital charges were $25,147,389 while the mean length of stay (LOS) was 4.55 days. The highest number of cases was reported in April 2017. [ABSTRACT FROM AUTHOR]