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Chervin et al., Pediatrics, 2002

Inattention, Hyperactivity, and Symptoms of Sleep-Disordered Breathing

Focus & Behaviour
Published 2002

Researchers studied 866 children at two paediatric clinics and asked a simple question: are children who snore more likely to be hyperactive?

The answer was clear. Children who snored regularly were more than twice as likely to score high on hyperactivity scales — especially boys under 8. The more a child snored and showed signs of daytime sleepiness, the worse their attention and hyperactivity scores became.

What this study highlights is the overlap between ADHD symptoms and sleep-disordered breathing. A child who can't get proper rest at night because their airway is partially blocked will naturally be restless, unfocused, and emotionally dysregulated during the day. The researchers suggested that before any child is diagnosed with ADHD, their breathing and sleep should be assessed first — because the treatment for a blocked airway is very different from the treatment for a brain disorder.

Key Findings

  • 2.2x greater odds of elevated hyperactivity scores in habitual snorers, especially boys under 8.

  • 22% of snorers showed high hyperactivity scores versus 12% of non-snorers.

  • Inattention and hyperactivity correlated directly with daytime sleepiness and SDB indicators.

Source

Chervin et al., Pediatrics, 2002

DOI: 10.1542/peds.109.3.e45

Added to the Evidence Hub: 20 December 2025