Immediate hazard bypass above separate clinical-review lanesLive current inputs
Health & Fitness
Sleep Debt Risk Screening Calculator
Screen entered sleep duration, daytime sleepiness, drowsy-driving exposure, breathing concerns, insomnia persistence, and schedule variability without collapsing them into a medical diagnosis.
Duration gap to entered reference-
Immediate safety gate-
Clinical review flags-
Timing irregularity flag-
Persistence context-
Safety-critical exposure-
Suggested review route-
Screening boundary-
DROWSINESS SAFETY SCREEN
Immediate hazard bypass above separate clinical-review lanes
Drowsy driving and severe entered sleepiness bypass the lower evidence lanes. Breathing, persistence, timing, and work exposure remain visible without becoming one opaque score.
SCREEN EVIDENCE REGISTER
Every entered flag, threshold, and safe response
The register explains why each item matters and avoids assigning a probability of disease.
| Domain | Entered evidence | Screen status | Why it matters | Action boundary |
|---|
SCREEN SETUP
Enter observable evidence, not a guessed diagnosis
- Use a recent multi-night duration average.
- Record actual drowsy driving or near misses.
- Enter breathing pauses only when observed or reported.
- Count persistence from the beginning of the current problem.
- Treat the result as a routing aid, not permission to continue a hazardous task.
SAFETY BEFORE ETIOLOGY
The urgent question is whether the person can act safely now
A drowsy-driving event or severe inability to stay awake changes the immediate response regardless of the calculated duration gap.
Breathing concerns and persistent sleep difficulty need qualified assessment because a duration calculator cannot determine the cause.
SCREEN LOGIC
Use explicit gates rather than a misleading weighted score
The duration gap is arithmetic. Immediate safety, breathing, persistence, schedule irregularity, and safety-critical exposure are evaluated independently so one reassuring value cannot cancel a dangerous flag.
Detailed calculation process and general formulas
G_duration = max(T - S_bar, 0)I_immediate = I_drive OR I_sleepiness=3F_clinical = I_breathing + I_persistentI_persistent = 1 when weeks >= 3I_schedule = 1 when SD_timing >= 1.5 hSymbols, meanings, and units
- S_bar
- entered average sleep durationhours/night
- T
- entered duration referencehours/night
- I
- binary evidence indicatordimensionless
- F_clinical
- count of entered clinical-review flagsflags
- SD_timing
- entered sleep-timing variabilityhours
SCREEN ROUTES
Three routes replace a single risk label
The page separates immediate hazard, clinical review, and schedule improvement.
Immediate safety
-Drowsy driving or severe sleepiness activates the bypass.
Clinical review
-Breathing and persistent symptoms remain explicit.
Schedule review
-Timing variability is shown without diagnosing a circadian disorder.
Decision takeaway: Stop hazardous activity first; then address the underlying sleep problem with appropriate professional help.
DO NOT WAIT
Situations that need action beyond this page
- Do not drive when sleepy
- Arrange safe transport after a drowsy-driving event
- Seek urgent care for severe breathing difficulty or other acute symptoms
- Discuss observed breathing pauses with a clinician
- Seek assessment for persistent insomnia or excessive sleepiness
Applied decisions
Why similar sleep duration can lead to different routes
Moderate short sleep without immediate hazard
Average duration is below reference, but no drowsy-driving or severe sleepiness flag is entered.
What the result clarifies: The page emphasizes schedule and symptom review rather than an emergency label.
Near miss despite a higher average
The duration average looks less concerning, but a drowsy-driving near miss is entered.
What the result clarifies: The safety bypass activates because the event matters more than the average.
Worked default scenario
Current-input substitution and reconciliation
Method references
Evidence used to frame this specific model
Scope and limitations
This screen cannot diagnose insomnia, sleep apnea, narcolepsy, circadian disorders, or impairment. Do not drive or operate machinery when sleepy. Urgent breathing difficulty, confusion, loss of consciousness, or other acute symptoms require immediate professional care.
Sleep Debt Risk Screening Calculator | Drowsiness Safety Gate FAQ
Is the clinical flag count a disease probability?
No. It only identifies entered reasons to seek professional review.
Why is drowsy driving a bypass?
It is an immediate safety event that should not be averaged away.
Does seven hours guarantee alertness?
No. Sleep need, quality, timing, disorders, illness, and medication can affect alertness.
Can the screen clear me for safety-critical work?
No. It is not a fitness-for-duty assessment.