Evidence map›Paper›PMID 37431403›Full record

ArticleJCPP advances2021

Familial liability to asthma and ADHD: A Swedish national register-based study.

Shihua Sun, Ralf Kuja-Halkola, Zheng Chang, Samuele Cortese, Catarina Almqvist, Henrik Larsson

Abstract read
In one paragraph

Article in JCPP advances, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

The trial behind it

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Large-scale evidence of a general disease ('Psychological medicine · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Paediatric asthma and non-allergic comorbidities: A review of current risk and proposed mechanisms.Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology · 2022
    Review
  10. Article
  11. Beyond theJCPP advances · 2021
    Article
  12. Article
  13. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Shihua SunDepartment of Medical Epidemiology and Biostatistics Karolinska Institutet Stockholm Sweden.ORCID https://orcid.org/0000-0002-0699-9324
Ralf Kuja-HalkolaDepartment of Medical Epidemiology and Biostatistics Karolinska Institutet Stockholm Sweden.ORCID https://orcid.org/0000-0002-3765-2067
Zheng ChangDepartment of Medical Epidemiology and Biostatistics Karolinska Institutet Stockholm Sweden.
Samuele CorteseCenter for Innovation in Mental Health Academic Unit of Psychology University of Southampton Southampton UK.
Catarina AlmqvistDepartment of Medical Epidemiology and Biostatistics Karolinska Institutet Stockholm Sweden.
Henrik LarssonDepartment of Medical Epidemiology and Biostatistics Karolinska Institutet Stockholm Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Studies have reported significant associations between asthma and attention-deficit/hyperactivity disorder (ADHD), but whether the association is due to shared etiology such as shared genetic risk factors remains unclear. We aimed to investigate patterns of familial co-aggregation of asthma and ADHD and also to quantify the relative contribution of genetic and environmental influences. Methods: Through Swedish register linkages, we obtained a cohort of 927,956 individuals born 1992-2001 and identified monozygotic twins (MZ), dizygotic twins (DZ), full- and half-siblings, and full- and half-cousins. Clinical diagnosis of asthma and ADHD were identified from the Swedish national registers. We used logistic regressions to investigate the within-individual association and familial co-aggregation between asthma and ADHD. We then used bivariate twin modeling to quantify the genetic and environmental correlations and their contributions to the familial liability. Results: Individuals with asthma had significantly higher risk of ADHD (odds ratio [OR], 1.50; 95% confidence interval [CI], 1.47-1.54). Relatives of individuals with asthma had an increased risk of ADHD compared to relatives of individuals without asthma; in familial co-aggregation analysis, the association was strongest in MZ twins (OR, 1.67; 95% CI, 0.99-2.84) and attenuated with degree of genetic relatedness. In the twin modeling, the phenotypic and genetic correlations between asthma and ADHD estimated from the ACE model were 0.09 (95% CI, 0.05-0.14) and 0.12 (95% CI, 0.02-0.21), respectively. The bivariate heritability was 0.88 (95% CI, 0.30-1.46). Estimates for contributions from shared and non-shared environment factors were not statistically significant. Conclusions: Asthma and ADHD co-aggregate in families primarily due to shared genetic risk factors. Within-individual and family history of either disorder should prompt clinical assessment of the other condition. Future studies should further investigate genetic variants underlying the co-occurrence of ADHD and asthma.

Indexed as

ADHDasthmafamily co‐aggregationtwin modeling

Identifiers

PMID37431403
PMCPMC10242819

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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 OpenQuestion graph.