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Randomised controlled trial
Simplified sleep restriction impacts objective but not subjective sleep for people with primary insomnia in primary care
  1. Jason Ellis
  1. Northumbria Centre for Sleep Research, Northumbria University, Newcastle upon Tyne, UK
  1. Correspondence to : Dr Jason Ellis Northumbria Centre for Sleep Research, Northumbria University, NB407/408 Northumberland Building, Newcastle upon Tyne, Newcastle NE1 8ST, UK; jason.ellis{at}

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Insomnia is a significant health concern with annual incidence rates of approximately 36.6% in its acute and 2.8% in its chronic form.1 Importantly, insomnia is a significant risk factor for the development of several physical and psychological illnesses—most notably major depression.2 ,3 Despite advances in non-pharmacological insomnia treatments, specifically a 6–8-week course of cognitive-behavioural therapy for insomnia (CBT-I), significant barriers limit its implementation in primary care. The aim of this study was to examine a simplified version of a single component of CBT-I (ie, sleep restriction) in …

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  • Competing interests None declared.

  • Provenance and peer review Commissioned; internally peer reviewed.