IntroductionAutism spectrum disorder is common in children with increasing prevalence, leading to efforts towards early identification and treatment initiation in young children. We aimed to identify the developmental trajectory of young children with an autism diagnosis and clinical factors associated with better developmental outcomes in a real-world setting.MethodsIn this study, 38 children (mean age 21.9 ± 4.7 months) who were diagnosed at < 2 years of age with autism had developmental evalu