Use With Diary Data
The calculator consumes already-collected sleep diary values that distinguish time in bed from time actually asleep. It does not define a new diary structure.
Sleep Efficiency Calculation
Sleep Efficiency Calculation is a CBT-I practitioner tool for clinicians treating insomnia. It helps the practitioner calculate the proportion of time in bed spent asleep from recent sleep diary data so the next sleep-window decision can be reviewed with the calculation basis visible.
Explore a sample diary interval and view the calculated sleep efficiency.
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Tool guide
Learn more about this tool
Use this background section to understand when the tool fits, how practitioners use it, and what to consider before sharing it with clients.
Partial Coverage
If sample diary data is incomplete, the demo marks the result as partial and shows which days are missing or excluded instead of filling in values.
Review Boundary
The tool displays a descriptive calculation and comparison. Practitioner interpretation and sleep-window decisions remain separate from the calculated result.
Does this tool collect a new sleep diary?
No. It consumes structured or previously captured sleep diary values that already distinguish time in bed from time asleep.
Does the calculator recommend whether to restrict or expand the sleep window?
No. It calculates and displays sleep efficiency and comparison context; the practitioner makes and records the treatment decision separately.
Can incomplete diary data be reviewed?
Yes. Incomplete coverage can be shown as a partial result when enough valid time-in-bed and time-asleep values are available.
What gets saved from the demo?
The tool and reusable practitioner configuration are saved. Sample diary values and fictional demo results are not saved as real client data.