ArticleJournal of intellectual disability research : JIDR2026
Comorbidities in People With Intellectual Disability With and Without Schizophrenia and Schizophrenia Without Intellectual Disability: A Swedish Register Study (IDcare).
Article in Journal of intellectual disability research : JIDR, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
2 citing papers in PubMed.
- Concomitant pathologies and their impact on schizophrenia: a narrative overview of current evidence.Journal of neural transmission (Vienna, Austria : 1996) · 2026Review
- Comorbidities in People With Intellectual Disability With and Without Schizophrenia and Schizophrenia Without Intellectual Disability: A Swedish Register Study (IDcare).Journal of intellectual disability research : JIDR · 2026Article
Corrections and comments
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Authors and funding
3 authors.
Funding
Abstract
backgroundIntellectual disability (ID) and schizophrenia are known to separately carry a high risk of comorbidity of mental health and physical conditions. However, the prevalence and risk of comorbidities among people diagnosed with concurrent ID and schizophrenia have to date not been studied.
methodsFrom a cohort including all people in Skåne, Sweden, the following three groups were established: (1) people with ID and concurrent schizophrenia, (2) people with ID without schizophrenia and (3) people with schizophrenia without ID. Diagnoses were determined using the Region Skåne healthcare database. Poisson regression was used to estimate relative risks (RRs) with 95% confidence intervals (CIs) of having at least one diagnosis in each ICD-10 chapter or block for group 1 versus groups 2 and 3, respectively. All analyses were adjusted for age at inclusion (i.e., 2014, continuous variable), sex and ethnicity.
resultsFor several diagnostic chapters, there were higher risks among people with ID and schizophrenia, compared to both those with ID without schizophrenia and those with schizophrenia but without ID. These chapters included the following: I (parasites), III (blood and immunity), IV (endocrine), VII (eye), XII (skin and tissue) and XIV (genitourinary). The blocks with the highest risks compared to the other two groups were diabetes mellitus, disorders of other endocrine glands, obesity and other hyperalimentation, organic-including symptomatic and mental health conditions, extrapyramidal and movement and other respiratory diseases principally affecting the interstitium.
conclusionsPeople with the combination of ID and schizophrenia had an increased risk of both physical and mental health conditions that could not be explained by either ID or schizophrenia alone. A correct diagnosis for people with the combination of ID and schizophrenia is important for the provision of adequate treatment. Future research should investigate pathways and explanatory factors, as well as the provision of services for people with ID and schizophrenia.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.