Medical Review Policy
SmartSleepCalc.com provides free, science-based sleep tools and educational content reviewed for clinical accuracy. This page explains who reviews our content, what the review process covers, what our medical reviewer’s credentials are, and where the limits of our editorial expertise lie. We operate under YMYL (Your Money or Your Life) standards because sleep health intersects directly with cardiovascular, metabolic, and mental health outcomes.
Section 1 — Our Medical Reviewer
All health-relevant content on SmartSleepCalc.com is reviewed by a named, credentialled clinical sleep specialist before publication and after any substantive update. This is not a generic “reviewed by a medical team” statement — it is a named individual with a verifiable credential.
Behavioural Sleep Medicine · CBT-I Specialist · 12 years clinical practice
MSc Sleep Science · NHS Sleep Clinic · Occupational Health Sleep Programmes
Dr. Sarah Mitchell is a Certified Clinical Sleep Health Specialist (CCSH) with 12 years of clinical practice in behavioural sleep medicine. The CCSH credential is awarded by the American Academy of Sleep Medicine (AASM) and requires demonstrated clinical competency in the evaluation and management of sleep disorders, with a specific focus on behavioural interventions. It is not self-awarded or honorary — it requires active healthcare licensure, documented clinical experience, and passing a standardised AASM competency assessment, with mandatory renewal through continuing education. Her CCSH credential can be independently verified at sleeptmf.org/ccsh-directory.
Dr. Mitchell’s primary specialism is Cognitive Behavioral Therapy for Insomnia (CBT-I) — the AASM-designated, NHS-approved, and ACP-recommended first-line treatment for chronic insomnia, with documented efficacy rates of 70–80% across randomised controlled trials, consistently outperforming pharmacological treatment in long-term outcomes (Morin et al., 2006; Qaseem et al., 2016). CBT-I practice requires deep clinical knowledge of sleep architecture, circadian rhythm physiology, sleep restriction protocols, sleep latency norms, and the applied science of sleep cycle timing — precisely the domain that SmartSleepCalc.com’s calculators and educational content are built on. This is not a peripheral credential. It is directly relevant to the content she reviews.
Over 12 years, Dr. Mitchell has worked in NHS sleep clinics, private behavioural sleep medicine practice, and occupational health programmes serving night shift workers, long-haul aircrew, and healthcare professionals. This applied clinical background makes her the appropriate reviewer for a site whose tools cover sleep cycle timing, sleep latency adjustment, shift work sleep calculation, sleep deprivation effects, and age-stratified sleep recommendations — all areas where clinical accuracy has direct health consequences for users.
Credential — What It Requires
CCSH · American Academy of Sleep Medicine
Requires active healthcare licensure, documented clinical experience in behavioural sleep medicine, and a standardised AASM competency assessment. Renewed through continuing education. Not a self-issued or honorary title. Verifiable at sleeptmf.org/ccsh-directory.
Primary Specialism
CBT-I — First-Line Insomnia Treatment
CBT-I is the AASM, NHS, and ACP first-line treatment for chronic insomnia. 70–80% efficacy in RCTs, superior long-term outcomes vs. pharmacotherapy (Morin et al., 2006). Direct clinical relevance to all sleep cycle, latency, and sleep hygiene content on this site.
Clinical Experience
12 Years · NHS · Occupational Health
NHS sleep clinic, private practice, and occupational health programmes covering night shift workers, long-haul aircrew, and healthcare professionals. Applied experience directly relevant to shift work content, sleep latency norms, and age-stratified calculator defaults.
Review Scope
What Dr. Mitchell Reviews on This Site
All calculator logic and formula accuracy · all health-adjacent editorial content · all FAQ answers that give health guidance · accuracy of cited research · appropriate clinical context · medical disclaimers on all YMYL pages · “when to see a doctor” threshold language. Review does not extend to paediatric sleep, obstetrics, or psychiatry.
ⓘ Scope of Dr. Mitchell’s Review — What Is and Is Not Covered
- Adult sleep science, sleep timing tools, NSF/AASM guideline-based recommendations, shift work sleep, and sleep latency — fully within scope.
- Circadian rhythm physiology, sleep deprivation effects, sleep stage descriptions, and sleep hygiene guidance — fully within scope.
- Paediatric sleep content: reviewed against AAP guidelines; Dr. Mitchell is not a paediatric sleep specialist. Pages include explicit referral guidance to AAP and paediatric clinical resources.
- Pregnancy sleep content: reviewed against published obstetric evidence summaries; Dr. Mitchell is not an OB/GYN or midwife. All pregnancy-adjacent content recommends obstetric consultation.
- Psychiatric sleep conditions (severe depression, bipolar, PTSD-related sleep disorder, psychosis): content recommends specialist consultation; Dr. Mitchell does not editorially represent psychiatric care and does not review this content as a psychiatrist.
Our Editorial Commitment
SmartSleepCalc.com operates in the YMYL (Your Money or Your Life) category — sleep health intersects with cardiovascular health, metabolic function, mental health, and immune response. We take this responsibility seriously. Our commitment is to accuracy, transparency, and honest communication of both what the science shows and where evidence is limited or uncertain. We do not publish health claims we cannot source. We do not present population averages as individual prescriptions. We do not allow commercial relationships to influence clinical accuracy.
Evidence-Based
All health claims reference peer-reviewed research or established clinical guidelines. We cite sources and name researchers where claims are non-obvious or clinically significant.
Transparent Uncertainty
Where evidence is limited, preliminary, or contested, we say so explicitly. We distinguish strong consensus from promising findings from preliminary data. We do not present emerging research as established fact.
Regularly Updated
Sleep science is an active research field. Content is reviewed on a defined schedule and updated when new evidence materially changes the accuracy of any health claim on this site.
What We Cover and How We Classify It
Not all content on this site carries the same health sensitivity. We apply different editorial standards based on the nature of the content — general sleep education, calculator tools, and medically sensitive topics each receive appropriate treatment.
Category A
Sleep Timing Tools
- Sleep cycle calculators
- Bedtime and wake-up calculators
- Nap duration calculators
- Jet lag calculators
These tools use established sleep science (NSF guidelines, Kleitman ultradian rhythm research). Calculations are based on population averages with clear individual variation notes.
Category B
Sleep Science Education
- Sleep stage descriptions (N1, N2, N3, REM)
- Circadian rhythm physiology
- Sleep deprivation effects
- Sleep hygiene recommendations
Educational content is based on mainstream sleep science consensus. We reference primary research and named researchers. Age-appropriate sleep recommendations follow National Sleep Foundation (NSF) guidelines.
Category C
Health-Adjacent Topics
- Sleep and exercise
- Body temperature during sleep
- Napping after exercise
- Sleep and recovery
Topics where sleep intersects with physical health. Content cites specific researchers (e.g. Van Cauter on GH, Kraeuchi on thermoregulation) and distinguishes well-established findings from emerging evidence.
Category D — YMYL
Medically Sensitive Topics
- Heart rate during sleep
- Cardiovascular risk markers (nocturnal dip)
- Fever and sleep
- When to see a doctor callouts
These pages carry prominent medical disclaimers, include specific “speak to your doctor if…” callouts, and are held to the highest accuracy standard. Data ranges cite clinical sources and flag individual variation explicitly.
YMYL Content Standard
Pages covering cardiovascular markers (heart rate nocturnal dip, non-dipper cardiovascular risk) are treated as medical information under Google’s YMYL guidelines. These pages include: accurate clinical data ranges with named sources, explicit “consult your doctor” sections for concerning readings, clear statements that our tools and content do not replace medical evaluation, and medical disclaimer notices visible on the page itself — not buried in footers only.
Section 2 — Our Review Process
Every substantive health or health-adjacent page on SmartSleepCalc.com is reviewed before publication and re-reviewed when new evidence or guidelines materially affect its claims. The five-step creation process and the six review dimensions below are applied consistently — not selectively.
Research and source identification
Content is drafted with reference to primary research literature, clinical guidelines, and established textbook-level sleep science. Key findings are attributed to named researchers and institutions. For YMYL pages, at least two independent sources are required for each health claim. Where only one source exists, this is flagged as limited evidence within the content itself.
Accuracy review of all numerical data
Every numerical claim — heart rate ranges, sleep duration recommendations, deprivation effect percentages, temperature values, latency norms — is individually verified against its cited source before publication. Calculator formulas are tested against edge cases (midnight crossing, extreme latency values, age boundary conditions) and validated against published reference values. A formula that produces a wrong result at edge conditions is a clinical accuracy failure, not just a technical one.
Medical disclaimer and referral guidance placement
Before publication, every Category D (YMYL) page is checked for: a “when to see your doctor” section with specific, measurable thresholds; a medical disclaimer note visible above the fold or within the first scroll; accurate medical caveat language that neither overstates nor understates clinical significance; and explicit language distinguishing educational content from clinical advice. Disclaimer placement in footers only does not meet this standard.
Plain language accuracy review
Clinical accuracy is preserved in plain language — not sacrificed for readability. Where technical terms are necessary (e.g. sleep onset latency, nocturnal dip, poikilothermia, HRV), they are defined on the same page in plain language. Dr. Mitchell specifically reviews whether simplifications introduce inaccuracies that could mislead users into incorrect health decisions.
Publication, monitoring, and re-review scheduling
Published pages are assigned a review date based on content category — YMYL: annual minimum; health-adjacent: 18 months. User feedback is monitored for inaccuracy reports. Pages are queued for immediate review when new clinical guidelines are issued, major new research contradicts existing content, or a reader submits a substantiated accuracy concern. Re-reviewed pages show a visible updated “Last reviewed” date and, where content changed, a brief inline change note.
What Dr. Mitchell’s Review Checks — Six Dimensions
Dimension 1
What Is Reviewed
All calculator logic and formula accuracy — including edge case testing. All health-adjacent editorial content (sleep stages, deprivation effects, circadian physiology). All FAQ answers where a user could reasonably apply the answer to a health decision. Product recommendation pages are reviewed for claim accuracy, not commercial merit.
Dimension 2
Research Accuracy
Cited findings must match what the paper actually states — not what the abstract implies or what a secondary source interpreted. Dr. Mitchell checks cited studies directly against the claims made. Where a study is cited selectively or out of context, the content is revised before publication.
Dimension 3
Review Frequency
All pages reviewed before publication. Category D (YMYL) pages reviewed on an annual minimum cycle. Category B and C pages reviewed every 18 months or when a related clinical guideline is updated, whichever comes first. Calculator formulas re-reviewed whenever NSF, AASM, or AAP updates age-group thresholds.
Dimension 4
Update Triggers
Four events force immediate review: (1) new AASM, NSF, or AAP guideline publication; (2) a new meta-analysis (N>10,000) contradicting existing content; (3) a confirmed reader-reported inaccuracy — reviewed within 48 hours, corrected within 5 business days; (4) a clinical safety issue related to any site claim — same-day correction if confirmed.
Dimension 5
Update Transparency
Updated pages display a visible “Last reviewed” date in the page header — not only in metadata. Substantive changes to any health claim include a brief inline change note stating what was updated and which source or guideline prompted it. We do not silently update YMYL content without a visible audit trail.
Dimension 6
What Is NOT Medical Advice
SmartSleepCalc.com is an educational resource. No content — including calculators, data ranges, FAQ answers, or editorial articles — constitutes medical advice, diagnosis, or treatment. The review process ensures clinical accuracy of educational content. It does not convert educational content into clinical care. All YMYL pages carry a prominent disclaimer checked by Dr. Mitchell for appropriate scope language.
⚠ This content is educational — not medical advice
All SmartSleepCalc.com content — including every calculator, data range, age recommendation, and FAQ answer — is provided for general educational purposes only. It does not establish a patient-provider relationship. Dr. Mitchell’s review ensures clinical accuracy of educational content; it does not convert that content into individualised medical advice. If you are experiencing a sleep disorder, cardiovascular symptoms, or any condition where sleep parameters concern you, consult a licensed healthcare professional. Do not use this site as a substitute for doing so.
Section 3 — Scope and Limitations
Transparency about what our review covers — and what it does not — is part of our commitment to responsible health publishing. Dr. Mitchell is a highly qualified adult behavioural sleep medicine specialist. She is not a paediatrician, an obstetrician, or a psychiatrist. These limitations are published openly because users deserve to know where our editorial expertise ends.
Paediatric Sleep
Sleep content covering children and teens is reviewed against AAP published guidelines and Paruthi et al. (2016) AASM consensus recommendations. Dr. Mitchell is not a paediatric sleep specialist. SmartSleepCalc does not provide guidance on infant sleep disorders, paediatric sleep apnoea management, or childhood sleep pathology — these require specialist evaluation. All paediatric content includes explicit referral language to AAP resources.
ⓘ Reviewed vs. AAP guidelines — not by a paediatric specialistPregnancy Sleep
Where this site addresses sleep during pregnancy — positional sleep guidance, third-trimester sleep fragmentation, or restless legs in pregnancy — content is checked against published obstetric and midwifery evidence summaries. Dr. Mitchell is not an OB/GYN or midwife. Pregnancy sleep content does not constitute obstetric advice. All content in this area includes an explicit recommendation to consult a registered midwife or obstetric clinician.
ⓘ Reviewed vs. obstetric guidelines — not by an OB/GYNPsychiatric Sleep Conditions
Sleep disruption associated with severe depression, bipolar disorder, psychosis, PTSD, and other psychiatric conditions is referenced in educational context only. Dr. Mitchell is not a psychiatrist. Content in this area recommends professional consultation and does not suggest self-management strategies for conditions requiring psychiatric care. No content on this site presents itself as providing psychiatric guidance.
ⓘ Educational reference only — recommends specialist consultationFound a clinical inaccuracy? Tell us.
If you are a clinician, researcher, or reader who identifies a factual error, a misrepresented study, an outdated guideline reference, or a data range that does not match its cited source — please contact us. We review all accuracy reports regardless of whether they are inconvenient to page structure or SEO. If the inaccuracy is confirmed, we will issue a correction and update the page with a visible change note. We do not dismiss corrections. We treat every substantiated report as an editorial priority.
🕐 Response SLA: 48 hours · Correction if confirmed: within 5 business daysSources and References We Use
Our content draws on a defined hierarchy of sources. We do not reference tabloid health journalism, unverified anecdotal reports, or press releases as evidence for clinical claims. Sources are weighted in descending order of evidential quality.
Peer-reviewed research
Primary sleep research published in indexed journals. We reference the specific study and author(s) by name where claims are non-obvious or clinically significant. We distinguish replication-supported findings from single-study results.
Clinical guidelines
NSF, AASM, AAP, NHS, and equivalent international bodies for sleep duration recommendations, disorder criteria, and clinical thresholds. Guideline citations include publication year so readers can identify their currency.
Established textbooks
Foundational sleep science textbooks (e.g. Principles and Practice of Sleep Medicine, Kryger, Roth & Dement) for non-contested physiological facts and mechanism descriptions.
Key researchers cited on this site
Content Update Policy
Sleep science is an active research field. Our update policy ensures content reflects current evidence rather than remaining static after publication. Outdated clinical data on a YMYL health site is not a minor editorial issue — it is a patient safety issue.
Scheduled reviews
Category D (YMYL) pages reviewed at minimum annually. Category B and C pages reviewed every 18 months or when related guidelines are updated, whichever comes first. Review dates are visible on each page.
Triggered reviews
Immediate review triggered by: new AASM/NSF/AAP guideline publication, meta-analyses (N>10,000) contradicting existing content, confirmed reader-reported inaccuracy, or a clinical safety issue related to any site claim.
Update transparency
Updated pages show a visible “Last reviewed” date in the page header. Substantive health claim changes include a brief change note explaining what was updated and which source prompted it.
Medical Disclaimer
⚠ Important — Please Read
SmartSleepCalc.com provides sleep science information and calculation tools for general educational purposes only. The content on this website — including all articles, calculators, FAQ answers, data ranges, and research summaries — does not constitute medical advice and must not be used as a substitute for professional medical evaluation, diagnosis, or treatment. Dr. Mitchell’s review ensures clinical accuracy of educational content. It does not convert that content into personalised medical advice for any individual reader.
- Sleep disorders — including insomnia, obstructive sleep apnoea, circadian rhythm disorders, restless legs syndrome, and parasomnias — require diagnosis and management by a qualified healthcare professional. This site does not diagnose, treat, or manage sleep disorders.
- Calculator outputs are population-average estimates. Individual sleep cycle length varies from 70 to 120 minutes. Individual sleep onset latency varies from under 5 minutes to over 30 minutes. Treat all calculator results as starting-point guidance, not individual prescriptions.
- Heart rate data, blood pressure references, and other physiological parameters shown on this site represent population-level normal ranges. Readings outside these ranges may be normal for you — or may require medical evaluation. Only a qualified clinician can determine which applies to your situation.
- If you experience symptoms including chest pain, shortness of breath, palpitations, witnessed apnoea, excessive daytime sleepiness interfering with daily function, or persistent inability to sleep — seek medical advice promptly. Do not use this website in place of doing so.
- Nothing on this website creates a patient-provider relationship between SmartSleepCalc.com, Dr. Sarah Mitchell, or any associated party, and any reader of this site.
Found a clinical error or have a question about our editorial process? We take accuracy reports seriously and treat every submission as an editorial priority. Contact us and we will review your report within 48 hours. If confirmed, we issue a correction within 5 business days with a visible change note.
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