It is also important to consider that the prevalence found is probably highly influenced by the activity of the countries in the diagnosis and training of professionals who care for children and adolescents. The studies reviewed lead us to conclude that the prevalence rate of NDDs fluctuates globally between 4.70 and 88.50% these variations depend on methodological aspects such as estimation procedures, as well as on sociocontextual phenomena. Likewise, it is estimated that the prevalence of the most studied disorders, such as ADHD, ASD and SLD, remains stable over time and is consistent in different cultures, ages, ethnicities and sexes. Although there is extensive literature on specific disorders, NDDs have rarely been assessed as a whole.Īll of the reviewed studies support the idea that such disorders can be considered chronic, heterogeneous, underdiagnosed conditions and that comorbidity of multiple NDDs is the norm. The reported prevalence rates were as follows: intellectual disability (ID), 0.63% attention-deficit/hyperactivity disorder (ADHD), 5–11% autism spectrum disorder (ASD), 0.70–3% specific learning disorder (SLD), 3–10% communication disorders (CDs), 1–3.42% and motor disorders (MDs), 0.76–17%. In the scientific literature, there have been only a few studies measuring the prevalence of NDDs according to the DSM-5 (2013) criteria in people under 18 years old.

In total, 17 articles were selected for the study. MethodĮmpirical studies complying with the PRISMA guidelines were identified from four databases (PubMed, Scopus, Science Direct, and ProQuest) and systematically reviewed. To interpret the current evidence on the prevalence of neurodevelopmental disorders (NDDs) through a systematic review based on both DSM-5 (2013) and PRISMA criteria.

Dsm 5 incidence of asd