Childhood sleep disorders linked to ADHD symptoms in preadolescence
New research from the Spanish CIBER consortium reveals a strong association between sleep disorders in children aged 8-9 and the development of attention-deficit/hyperactivity disorder (ADHD) symptoms two years later. This study offers valuable in- sights into the potential early indicators of ADHD, which affects approximately 7.5% of children.
Methodology
The investigation, led by Dr Llúcia González-Safont from the University of Valencia, analysed data from 1,244 children across three Spanish regions. Researchers utilised the following assessment tools:
Child Behavior Checklist (CBCL) for ages 6-18: To evaluate sleep disorders at ages 8-9
Conners Parent Rating Scale (CPRS-R:S): To assess ADHD manifestations at ages 10-11
Key Findings
Robust association
The study demonstrated a significant correlation between childhood sleep disorders and subsequent ADHD symptoms, even after controlling for various confounding factors.
Dr González-Safont commented, “Although not all children with sleep disorders will develop symptoms of ADHD, detecting them at an early stage, with questionnaires that are easy to apply in paediatric consultations, could contribute to preventing or mitigating future symptoms of behavioural problems like ADHD.”
Prevalence rates
Previous research has shown:
- Sleep disorders affect approximately 20% of children
- ADHD prevalence ranges from 3% to 7.5% in children
- Among children with ADHD, sleep disorders are present in 25% to 73.3% of cases
Implications for clinical practice
The findings suggest potential benefits in incorporating sleep disorder screening tools into primary care programmes. Dr González-Safont advocated for their inclusion in initiatives such as the Children’s Health Programme.
Conclusion
While the results are promising, the researchers emphasise the need for cautious interpretation. The study, published in the European Journal of Pediatrics [1], underscores the importance of healthy sleep habits in childhood and their potential impact on neurodevelopmental outcomes.
Reference:
- González-Safont, L., Rebagliato, M., Arregi, A. et al. Sleep problems at ages 8–9 and ADHD symptoms at ages 10–11: evidence in three cohorts from INMA study. European Journal of Pediatrics (2023). https://doi.org/10.1007/s00431-023-05145-3
