Sleep Path Readout
{{ primaryLane }}
{{ summarySentence }}
{{ urgencyLabel }} ISI {{ isiBand.shortLabel }} PSQI {{ psqiBand.shortLabel }} ESS {{ essBand.shortLabel }} {{ weeklyDebtLabel }} SE {{ efficiencyBand.shortLabel }}
{{ sleepCadenceStageLabel }} Bed Wake Light {{ cadenceWindowLabel }}
Choose the problem you want the first step to respect.
Enter 0-28 from an ISI run, or keep the sample value for a demo path.
/28
{{ isiValue }}/28
Enter 0-21 when you have a PSQI score.
/21
{{ psqiValue }}/21
Enter 0-24 from an ESS run.
/24
{{ essValue }}/24
Use the DBAS-16 mean score, or leave the sample value for routing practice.
/10
{{ formatFixed(dbasValue, 1) }}/10
Use the nightly target you are comparing against, such as 7.5 or 8.0.
h/night
{{ formatFixed(sleepNeedValue, 1) }} h
Use a recent nightly average, preferably from a diary.
h/night
{{ formatFixed(averageSleepValue, 1) }} h
Enter a recent weekly average, such as 83 or 88.5.
%
{{ formatPercent(sleepEfficiencyValue) }}
Use a 24-hour clock value such as 07:00.
Use decimal hours, such as 7.5 for 7 h 30 min.
h
{{ cadenceWindowLabel }}
Choose the strongest caution that applies to the current review.
Choose the minute step for nearby candidate windows.
min
Keep conservative values when daytime sleepiness or safety risk is present.
h
{{ formatWindowMinutes(minimumWindowMinutes) }}
Higher friction pushes a short sleep-hygiene anchor pass into the path.
Step Lane Source Action Reason Timing Copy
{{ row.priority }} {{ row.lane }} {{ row.source }} {{ row.action }} {{ row.reason }} {{ row.timing }}
Signal Value Band Path implication Source Copy
{{ row.signal }} {{ row.value }} {{ row.band }} {{ row.implication }} {{ row.source }}
Step Anchor Timing Action Guardrail Source Copy
{{ row.priority }} {{ row.anchor }} {{ row.timing }} {{ row.action }} {{ row.guardrail }} {{ row.source }}
Candidate Window Bedtime Projected SE Review lane Use Copy
{{ row.candidate }} {{ row.windowLabel }} {{ row.bedtime }} {{ row.projectedLabel }} {{ row.reviewLane }} {{ row.use }} 

                

            

        

    

                

                

                    

                        

                            Tags: Date Time, Psychology, Sleep Hygiene
                        

                        

                            
                            
                        

                    

                

            

        

    


                    
        

        

        

            

            
        

        


                    

                

                

                    

                                                                                

                                
                                    
                                        Sleep Debt Calculator
                                                                                    Calculate sleep debt from a 7- or 14-night log, with gross deficit, oversleep credit, recovery-day estimates, and bedtime targets.
                                                                            
                                    
                                
                            

                                                                                

                                
                                    
                                        CBT-I Sleep Window Calculator
                                                                                    Plan a CBT-I sleep window from diary sleep and a fixed wake time, with projected efficiency, safety-floor checks, and weekly adjustment cues.
                                                                            
                                    
                                
                            

                                                                                

                                
                                    
                                        Dysfunctional Beliefs and Attitudes About Sleep (DBAS-16) Assessment
                                                                                    Assess DBAS-16 sleep beliefs on a 0 to 10 scale, compare the mean with the 3.8 reference, and prioritize beliefs to review next.
                                                                            
                                    
                                
                            

                                                                                

                                
                                    
                                        Caffeine Cut-off Calculator
                                                                                    Calculate the latest caffeine cut-off before bed from dose, half-life, absorption, and residual targets, with candidate-time and daily-limit checks.
                                                                            
                                    
                                
                            

                                            

                

            

        
                                                                                                                                                                                                                                                        
        

        

            
            

                Customize

                

                    

                        

                            
                            
                        


                        

                            
                            
                        


                        

                            
                            
                        

                    


                    

                        Advanced

                        

                            

                                
                                

                                    
                                    
                                

                            


                            

                                
                                

                                    
                                    
                                

                            


                            

                                
                                

                                    
                                    :
                                    
                                

                            


                            

                                
                                

                                    
                                    
                                

                            


                            

                                

                                    
                                    
                                

                            


                            

                                

                                    
                                    
                                

                            


                            

                                
                                
                            


                            

                                
                                
                            

                        

                    

                

            

            
        


        

            
            
            
        


        
        

    

    

        

  

    
    
Sleep hygiene advice is most useful when it is matched to the reason sleep is going badly. A person who gets too little sleep opportunity because of work, caregiving, school, pain, or an unstable schedule needs a different first step from someone who spends enough time in bed but lies awake for long stretches. Severe daytime sleepiness, drowsy driving, possible breathing pauses, shift work, seizure risk, bipolar disorder, parasomnia risk, and major mood changes can move safety review ahead of habit changes.

    
The phrase sleep hygiene usually refers to behaviors and conditions that support sleep: regular timing, light exposure, a calm sleeping space, caffeine and alcohol timing, meal timing, naps, wind-down routines, and how the bed is used. Those anchors matter, but they are not the same as treatment for chronic insomnia or a sleep disorder. A dark room and a fixed bedtime cannot settle whether someone is restricting sleep too much, accumulating sleep debt, experiencing excessive sleepiness, or using a sleep window that should be reviewed with clinical context.


    

      
Sleep opportunity

      
The protected time available for sleep. Too little opportunity can create debt even when habits look reasonable.

      
Sleep efficiency

      
Sleep time divided by time in bed. Low efficiency can point toward diary-backed insomnia work rather than another generic habit list.

      
Sleep debt

      
The shortfall between sleep need and recent average sleep, accumulated across the week.

      
Daytime sleepiness

      
A safety signal when dozing, driving risk, work risk, or possible untreated sleep apnea is present.

      
CBT-I

      
Cognitive behavioral therapy for insomnia, a structured approach that can include diaries, stimulus control, cognitive work, and carefully managed sleep-window changes.

    


    
Screening totals help sort these signals without pretending that one number explains everything. The Insomnia Severity Index (ISI) describes insomnia symptom burden. The Pittsburgh Sleep Quality Index (PSQI) summarizes sleep quality over several components. The Epworth Sleepiness Scale (ESS) measures usual dozing tendency across everyday situations. DBAS-16 captures the strength of sleep-related beliefs that may increase worry, effort, or rigid rules around bedtime.


    

      
        Sleep planning path from safety and scores through diary evidence and habit anchors
        
        
          Match the first step to the sleep signal
          
          
            
            
            
            
          
          
            
            
            
            
            
          
          Scores
          ISI, PSQI, ESS,
          DBAS-16
          Safety
          sleepiness,
          driving, apnea flags
          Diary
          average sleep,
          efficiency, debt
          Window
          fixed wake time,
          time in bed
          Path
          ranked
          steps
          
          check safety and sleep opportunity before tightening time in bed
        
      
    


    
The common mistake is treating every poor night as a hygiene failure. More caffeine control may help someone whose evening routine keeps them alert, but it will not replace adequate sleep opportunity. A strict sleep window may help some insomnia plans when guided by diary evidence, but it can be risky when excessive sleepiness, drowsy driving, or untreated breathing concerns are present. Sleep scores and diary estimates are therefore best read as routing clues, not diagnoses.

    
Sleep-hygiene planning is informational. It does not diagnose insomnia, sleep apnea, narcolepsy, circadian rhythm disorders, medication effects, or mood-related sleep problems. Severe sleepiness, drowsy driving, suspected breathing pauses, seizure risk, bipolar disorder, parasomnia risk, or major mood changes should be reviewed with a qualified clinician.

  






  

    
How to Use This Tool:

    
Use this tool when you already have screening totals or diary estimates and want an ordered path instead of a one-size-fits-all sleep-hygiene checklist. The cadence rail above the form shows the current time-in-bed window counted back from the fixed wake time.

    
    
      
  1. Set Main concern to the issue the first step should respect most: insomnia, sleep quality, daytime sleepiness, schedule, or sleep beliefs. The selected concern boosts matching ranked steps without overriding stronger safety or score signals.
    2. 
      
  2. Enter ISI total, PSQI total, ESS total, and DBAS-16 mean. Numeric boxes and sliders are bounded to their displayed ranges, so out-of-range entries are pulled back before calculation.
    3. 
      
  3. Add Sleep need and Average sleep in hours per night. These create the weekly sleep-debt signal shown in the readout and in Screening Signals.
    4. 
      
  4. Enter Diary sleep efficiency, Fixed wake time, and Current time in bed. If CBT-I Window Ladder shows --:-- under Bedtime, correct the wake time to a 24-hour clock value such as 07:00.
    5. 
      
  5. Choose the strongest Safety caution that applies. Sleepy driving, untreated sleep-apnea concern, complex clinical risk, or shift work can hold window changes until review.
    6. 
      
  6. Open Advanced when the default window assumptions do not fit. Window step controls candidate spacing, Minimum window sets the lower bound, and Habit friction changes the weight of schedule, light, caffeine, alcohol, meals, naps, and bed-sleep cues.
    7. 
      
  7. Read Sleep Path Readout and Sleep Path Steps first. Then use Screening Signals, Habit Anchor Plan, CBT-I Window Ladder, Window Efficiency Curve, Sleep Path Map, and JSON to verify why the route was chosen.
    8. 
    

  






  

    
Interpreting Results:

    
Sleep Path Readout names the primary lane and shows badges for urgency, ISI, PSQI, ESS, weekly debt, and sleep efficiency. Treat the lane as the first issue to verify, not as a diagnosis. A high-priority route means one signal is strong enough to move near the top of the plan.

    
    
      
  • Sleep Path Steps ranks up to six next actions. If the first step feels wrong, compare it with Screening Signals and the selected Main concern.
    • 
      
  • Habit Anchor Plan turns the route into practical anchors for wake time, light, sleep opportunity, substances, naps, bed-sleep cues, and belief pressure.
    • 
      
  • CBT-I Window Ladder lists candidate windows, bedtimes, projected sleep efficiency, review lanes, and use notes.
    • 
      
  • Window Efficiency Curve and Sleep Path Map visualize planning signals. They are not clinical probability charts.
    • 
    

    
The strongest false-confidence warning is safety. A tidy habit plan or a green-looking efficiency row does not clear sleep restriction when ESS total is high, sleepy driving is present, breathing pauses are suspected, or a complex clinical caution is selected. Recheck the score source, diary week, and safety caution before acting on a window change.

  






  

    
Technical Details:

    
The planner keeps each screening scale separate. It does not merge ISI, PSQI, ESS, DBAS-16, weekly debt, and sleep efficiency into one clinical score. Each input is bounded to the visible range, mapped to its own band, and used in both an ordered primary-lane rule and a ranked step list.

    
The numeric core is deliberately small. Weekly sleep debt estimates the weekly shortfall between entered need and recent average sleep. Projected sleep efficiency estimates how the recent average would fit inside each candidate time-in-bed window.


    
Formula Core:

    

      
        
          
            weekly sleep debt
            =
            max(0,sleep need-average sleep)×7
          
          
            projected SE
            =
            average sleep minutescandidate window minutes×100
          
        
      
    

    
For example, 8.0 hours of sleep need and 6.4 hours of average sleep create max(0, 8.0 - 6.4) * 7, or 11.2 hours of weekly sleep debt. If average sleep is 384 minutes and a candidate time-in-bed window is 450 minutes, projected sleep efficiency is 85.3%.


    

      

        
        
          

            Signal
            Range
            Band
            Planning meaning
          

        
        
          

            ISI total
            0 to 7
            No clinically significant insomnia
            Insomnia burden stays low in the routing logic.
          

          

            ISI total
            8 to 14
            Subthreshold insomnia
            Can support monitoring and diary review without selecting the CBT-I diary lane by itself.
          

          

            ISI total
            15 to 21
            Clinical insomnia, moderate severity
            With efficiency below 85%, this can select the CBT-I diary route.
          

          

            ISI total
            22 to 28
            Clinical insomnia, severe range
            Raises insomnia priority and strengthens the need for qualified context.
          

          

            PSQI total
            0 to 5
            Better sleep-quality range
            At or below the common poor-sleep threshold used by the route rule.
          

          

            PSQI total
            6 to 10, 11 to 15, 16 to 21
            Elevated, high, or broad burden
            Values above 5 move sleep-quality component review upward.
          

          

            ESS total
            0 to 10
            Normal daytime sleepiness ranges
            Safety still depends on selected cautions such as driving or apnea flags.
          

          

            ESS total
            11 to 24
            Mild to severe excessive daytime sleepiness
            Pushes daytime-safety review higher, especially at 16 or above.
          

          

            DBAS-16 mean
            0.0 to 3.79
            Lower or building endorsement
            Belief review can stay secondary unless selected as the main concern.
          

          

            DBAS-16 mean
            3.8 to 10.0
            Reference crossed or high endorsement
            Adds belief review so worry and effort do not drive the plan.
          

          

            Weekly sleep debt
            4.0 to 7.99 h, 8.0 h or more
            Moderate or high debt
            Can move sleep opportunity ahead when ISI is below 15.
          

          

            Diary sleep efficiency
            Below 80%, 80% to 84.99%, 85% to 89.99%, 90% or higher
            Tighten review, audit, hold, or expansion review
            Shapes diary and window guidance when safety is stable.
          

        
      

    


    
Rule Core:

    
The primary lane follows the first matching condition below after values are bounded. Ranked steps are scored separately, so the top chart driver can differ from the rule-selected lane.

    

      

        
        
          

            First matching condition
            Primary lane
            Reason
          

        
        
          

            Safety score is at least 86
            Safety check first
            Severe sleepiness, sleepy driving, sleep-apnea concern, or complex clinical risk takes priority over schedule change.
          

          

            ISI is at least 15 and diary sleep efficiency is below 85%
            CBT-I diary route
            Insomnia burden plus low efficiency needs diary-backed review before time-in-bed changes.
          

          

            Weekly sleep debt is at least 4 hours and ISI is below 15
            Sleep opportunity route
            Too little protected sleep time may explain symptoms better than an insomnia-only path.
          

          

            PSQI is greater than 5
            Quality component route
            The poor-sleep threshold is crossed, so component drivers deserve review.
          

          

            DBAS-16 mean is at least 3.8
            Belief review route
            Sleep-related beliefs and worry may be increasing effort and rigid rules.
          

          

            No earlier condition applies
            Hygiene maintenance route
            Habit anchors can stay as maintenance unless symptoms or diary evidence change.
          

        
      

    


    
The candidate window logic starts near recent average sleep, rounded to the selected Window step, and never goes below Minimum window. Safety scores at or above 86 hold the current window. When safety is stable, efficiency at 90% or higher with ESS at 10 or below can add one step, while efficiency below 80% with ESS at 10 or below can subtract one step. Candidate rows around the current window are labeled as shorter, current, longer, or recommended.

    
Projected sleep efficiency below 80% is labeled Tighten review, below 85% is Audit before changing, below 90% is Hold window, 90% to 105% is Expansion review, and above 105% is Tight baseline window. Those labels are planning cues, not prescriptions.

  






  

    
Limitations and Safety Notes:

    
The output depends on entered totals and diary estimates. It cannot tell whether a score was copied from the right instrument, whether the diary week was typical, whether medication or another condition is involved, or whether a clinician-supervised CBT-I plan is appropriate.

    
    
      
  • Do not use the result to start, tighten, or expand sleep restriction when severe sleepiness, drowsy driving, untreated sleep-apnea concern, bipolar disorder, seizure risk, parasomnia risk, or unstable shift work is present.
    • 
      
  • The calculation runs in the browser. Current values may appear in the page URL when the setup is shared, so avoid sharing a URL that contains private sleep scores.
    • 
      
  • Downloaded tables, charts, and JSON files are records of entered values and computed planning routes. They are not clinical notes.
    • 
    

  






  

    
Worked Examples:

    
An ISI of 16, PSQI of 9, ESS of 8, DBAS-16 mean of 4.2, 8.0 hours of sleep need, 6.4 hours of average sleep, and 83% diary sleep efficiency usually selects CBT-I diary route. The same inputs also create 11.2 hours of weekly debt, so the path should not be read as insomnia-only.

    
If those scores are paired with Safety caution set to sleepy driving, the primary lane becomes Safety check first. The recommended row in CBT-I Window Ladder holds the current schedule, and its use note says to keep the window until safety context is reviewed.

    
A lower-insomnia case can point to sleep opportunity instead. ISI 10, PSQI 4, ESS 6, DBAS-16 mean 2.4, 8.0 hours of sleep need, 7.0 hours of average sleep, and 89% efficiency gives 7 hours of weekly debt. Because ISI is below 15 and debt is at least 4 hours, the primary lane can become Sleep opportunity route.

    
A troubleshooting example is an invalid Fixed wake time. When the ladder shows --:-- in the Bedtime column, enter a valid 24-hour time such as 06:30 or 07:00. Candidate windows can still be compared by duration and projected efficiency, but bedtime labels need a valid wake anchor.

  






  

    
FAQ:

    

      Can this diagnose insomnia or sleep apnea?
      
No. It routes entered screening scores, diary estimates, and safety cautions into a planning path. Diagnosis, medication decisions, breathing symptoms, narcolepsy concerns, mood risk, and complex medical history need qualified review.

    

    

      Why did safety move above the window suggestion?
      
Safety becomes dominant when the selected caution is sleepy driving, untreated sleep-apnea concern, complex clinical risk, or when ESS is high enough to raise daytime-sleepiness risk.

    

    

      What if I do not have one of the screening scores?
      
Enter 0 only when you deliberately want that signal to stay low. If a score is unknown, treat the ranked path as incomplete and give more weight to diary evidence, safety cautions, and qualified review.

    

    

      Why does the chart driver differ from the primary lane?
      
The primary lane follows ordered rules, while Sleep Path Map shows normalized priority values for several signals. A large debt value can be the strongest chart driver even when the rule order selects the CBT-I diary route.

    

    

      Why are bedtime values missing?
      
The Bedtime column needs a valid Fixed wake time. If it shows --:--, enter a 24-hour clock value such as 06:30 or 07:00.

    

  






  

    
Glossary:

    

      
ISI

      
Insomnia Severity Index, a 0 to 28 insomnia symptom and impact score.

      
PSQI

      
Pittsburgh Sleep Quality Index, a 0 to 21 sleep-quality score where higher values indicate poorer quality.

      
ESS

      
Epworth Sleepiness Scale, a 0 to 24 measure of usual daytime dozing tendency.

      
DBAS-16

      
Dysfunctional Beliefs and Attitudes about Sleep, reported here as a 0 to 10 mean score.

      
Sleep efficiency

      
Sleep time divided by time in bed, expressed as a percentage.

      
Sleep opportunity

      
The protected time available for sleep before judging whether insomnia-focused restriction is appropriate.

      
CBT-I

      
Cognitive behavioral therapy for insomnia, a structured treatment approach that can include diaries, stimulus control, cognitive work, and sleep-window decisions.

    

  






  

    
References: