Neonate Exclusion Criteria for Complex JIA

Complex JIA was defined as any neonate with Type 2, Type 3, or Type 4 JIA. Any neonate with a diagnosis of Type 1 JIA or who had an undesignated type but underwent a web excision, the standard surgical approach to Type 1 JIA, was excluded from our study. We also excluded all neonates with an undesignated JIA type and unspecified surgical procedure. All those with concomitant gastrointestinal anomalies, including duodenal atresia, colonic atresia, or gastroschisis, were excluded. Lastly, any neonate with suspected JIA who expired before surgical intervention was excluded.