A1 Journal article (refereed)
A Register Study Suggesting Homotypic and Heterotypic Comorbidity Among Individuals With Learning Disabilities (2024)


Aro, T., Neittaanmäki, R., Korhonen, E., Riihimäki, H., & Torppa, M. (2024). A Register Study Suggesting Homotypic and Heterotypic Comorbidity Among Individuals With Learning Disabilities. Journal of Learning Disabilities, 57(1), 30-42. https://doi.org/10.1177/00222194221150230


JYU authors or editors


Publication details

All authors or editorsAro, Tuija; Neittaanmäki, Reeta; Korhonen, Elisa; Riihimäki, Heli; Torppa, Minna

Journal or seriesJournal of Learning Disabilities

ISSN0022-2194

eISSN1538-4780

Publication year2024

Publication date11/02/2023

Volume57

Issue number1

Pages range30-42

PublisherSAGE Publications

Publication countryUnited States

Publication languageEnglish

DOIhttps://doi.org/10.1177/00222194221150230

Publication open accessOpenly available

Publication channel open accessPartially open access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/85700


Abstract

The present study examined whether learning disabilities (LD) in reading and/or math (i.e., reading disability [RD], math disability [MD], and RD+MD) co-occur with other diagnoses. The data comprised a clinical sample (n= 430) with LD identified in childhood and a sample of matched controls (n= 2,140). Their medical diagnoses (according to the International Classification of Diseases nosology) until adulthood (20–39 years) were analyzed. The co-occurrence of LD with neurodevelopmental disorders was considered a homotypic comorbidity, and co-occurrence with disorders or diseases from the other diagnostic categories (i.e., mental and behavioral disorders, diseases of the nervous system, injuries, other medical or physical diagnoses) was considered a heterotypic comorbidity. Both homotypic and heterotypic comorbidity were more common in the LD group. Co-occurring neurodevelopmental disorders were the most prominent comorbid disorders, but mental and behavioral disorders, diseases of the nervous system, and injuries were also pronounced in the LD group. Accumulation of diagnoses across the diagnostic categories was more common in the LD group. No differences were found among the RD, MD, and RD+MD subgroups. The findings are relevant from the theoretical perspective, as well as for clinical and educational practice, as they provide understanding regarding individual distress and guiding for the planning of support.


Keywordsreadinglearninglearning difficultiesreading disorderscomorbidity

Free keywordslearning disabilities; reading disabilities; mathematical disabilities; homotypic and heterotypic comorbidity; register data


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Ministry reportingYes

Reporting Year2023

Preliminary JUFO rating3


Last updated on 2024-13-05 at 18:26