© 2019, Springer-Verlag GmbH Germany, part of Springer Nature. To study the prevalence of subthreshold oppositional defiant disorder (ST ODD)—less than 4 symptoms, but nonetheless an impairing form of oppositional defiant disorder (ODD)—its coexistence with other homotypic externalizing and heterotypical internalizing problems in children and associated impairment, as well as the long-term effect of this condition. A population-based sample of 622 preschoolers (5.0% boys) was followed up from preschool to preadolescence. Parents were interviewed when the children were 3, 6 and 9 years old with the Diagnostic Interview for Preschoolers/Children and Adolescents versions following DSM-5 and the children’s functioning was assessed by trained clinicians. ST ODD diagnosis is highly prevalent (19.4–25.5%), highly comorbid [homo- (1.9–18.4%) and heterotypical (5.8–23.7%)], resulting in functional impairment across child development in a similar way for both genders. ST is also a risk factor condition that predicts the presence of psychological problems and impairment in childhood and preadolescence from preschool age. A broader clinical assessment and intervention similar to that provided full syndrome cases is needed for children presenting subthreshold forms of ODD.
de la Osa, N., Penelo, E., Navarro, J. B., Trepat, E., & Ezpeleta, L. (2019). Prevalence, comorbidity, functioning and long-term effects of subthreshold oppositional defiant disorder in a community sample of preschoolers. European Child and Adolescent Psychiatry, 28, 1385-1393. https://doi.org/10.1007/s00787-019-01300-0