SleepShift
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Clinical evidence base

The Science Behind
SleepShift.

Every component of the SleepShift protocol is drawn from peer-reviewed CBT-I research. These are the studies — and how each one maps to what you'll actually do inside the program.

Reviewed by Dr. Candice Seti, Psy.D.

Licensed Clinical Psychologist · Certified Insomnia Treatment Clinician

Headline findings from the CBT-I literature

70–80%

Clinical response to CBT-I

Trauer 2015 meta-analysis

1st-line

American Academy of Sleep Medicine (AASM) guideline

Edinger et al., AASM 2021

24 mo

CBT-I outperforms pharma at long follow-up

Morin et al., JAMA 1999

The studies below are the ones we cite when we say CBT-I is the most effective non-pharmacological treatment for chronic insomnia. The section after that shows how each finding turns into a specific behaviour inside the program.

The four landmark studies

The papers SleepShift is built on.

01Meta-analysis · 20 RCTs · n=1,162

Cognitive Behavioral Therapy for Chronic Insomnia: A Systematic Review and Meta-analysis

Trauer JM, Qian MY, Doyle JS, Rajaratnam SMW, Cunnington D. Annals of Internal Medicine, 2015;163(3):191–204

What it found: Across 20 randomized trials, CBT-I produced large, durable improvements in every primary insomnia metric — sleep onset latency, wake after sleep onset, total sleep time, and sleep efficiency. Effect sizes were sustained at follow-up months after treatment ended.

Why it matters here: Trauer remains the most cited efficacy reference for multicomponent CBT-I. It's why every major sleep society now treats CBT-I as first-line.

02AASM Clinical Practice Guideline

Behavioral and Psychological Treatments for Chronic Insomnia Disorder in Adults

Edinger JD, Arnedt JT, Bertisch SM, Carney CE, Harrington JJ, Lichstein KL, Sateia MJ, Troxel WM, Zhou ES, Kazmi U, Heald JL, Martin JL. Journal of Clinical Sleep Medicine, 2021;17(2):255–262

What it found: The American Academy of Sleep Medicine issued a STRONG recommendation for multicomponent CBT-I as first-line treatment for chronic insomnia disorder in adults, ahead of pharmacotherapy.

Why it matters here: This is the guideline US clinicians follow. SleepShift implements the exact multicomponent protocol AASM defines: sleep restriction, stimulus control, cognitive restructuring, sleep hygiene, and relaxation.

03Randomized controlled trial · 24-month follow-up

Behavioral and Pharmacological Therapies for Late-Life Insomnia: A Randomized Controlled Trial

Morin CM, Colecchi C, Stone J, Sood R, Brink D. JAMA, 1999;281(11):991–999

What it found: Adults with chronic insomnia were randomized to CBT, temazepam, both, or placebo. At end of treatment, all active arms outperformed placebo. By 24-month follow-up, CBT alone produced the most sustained sleep improvements — while the medication arms had largely returned to baseline.

Why it matters here: The classic durability finding. CBT-I doesn't just match medication short-term; it's the only insomnia treatment whose effects compound over time after you stop doing it.

04Meta-analysis · Sleep restriction therapy alone

The Clinical Effects of Sleep Restriction Therapy for Insomnia: A Meta-Analysis of Randomised Controlled Trials

Maurer LF, Espie CA, Omlin X, Emsley R, Kyle SD. Sleep Medicine Reviews, 2022;62:101597

What it found: Sleep restriction therapy administered as a standalone treatment — without the rest of the CBT-I bundle — produced clinically meaningful improvements in sleep efficiency, sleep onset latency, and ISI score. SRT is identified as the most potent single component of CBT-I.

Why it matters here: Validates the heaviest lever inside the SleepShift protocol. The sleep window calibration that runs from Week 2 forward is the same SRT mechanism this meta-analysis confirms.

From paper to protocol

Every component, mapped back to its evidence.

SleepShift doesn't pick and choose. The protocol implements every evidence-graded component from the AASM 2021 guideline.

Component
Sleep Restriction Therapy
EvidenceMaurer et al., 2022; Trauer et al., 2015
ApplicationYour prescribed sleep window is calibrated to your Week-1 baseline diary, then extended in 15–30-minute increments each week sleep efficiency clears 85%.
Stimulus Control
EvidenceBootzin (foundational); endorsed by AASM 2021
ApplicationDaily prompts that retrain the bed→sleep association: out of bed if awake >20 min, no clock-watching, fixed wake anchor.
Cognitive Restructuring
EvidenceMorin et al., 1999; AASM 2021
ApplicationStructured /reflect sessions identify and reframe the catastrophic thoughts that maintain hyperarousal (clock-watching anxiety, next-day performance fears).
Sleep Hygiene & Relaxation
EvidenceAASM 2021 (supportive)
ApplicationLight/caffeine/screen guidance and brief in-app wind-down routines. SleepShift treats sleep hygiene as supportive — not curative on its own.
Adherence + Outcome Tracking
EvidenceTrauer et al., 2015 (mechanism); Morin et al., 1999 (durability)
ApplicationDaily 2-minute diary feeds the efficiency calculation and weekly check-ins. The same metric the trials used.

What the research doesn't claim

The honest limits.

  • ·CBT-I is studied for chronic insomnia (≥3 nights/week for ≥3 months). Acute, situational sleep loss often resolves without treatment.
  • ·CBT-I is contraindicated in untreated bipolar disorder, certain seizure disorders, and severe untreated sleep apnoea. The SleepShift screening flags these so you don't start a protocol that could destabilise an underlying condition.
  • ·Sleep restriction temporarily reduces total sleep time before it improves efficiency. Week 2 is the hardest week — this is in the research, and we say so before you start, not after you pay.
  • ·SleepShift is a structured wellness program built on the CBT-I protocol. It is not a substitute for medical evaluation if you have a diagnosed sleep disorder or complex medical condition.

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