Functional Outcomes of Sleep Questionnaire
The Functional Outcomes of Sleep Questionnaire captures how sleepiness and sleep disruption affect daytime function. This page is for clinics. It is not a diagnosis and not a public test.
Overview
What is the FOSQ?
FOSQ focuses on functional impact rather than a single sleepiness total. Clinics use it to organise sleep-related function for clinician review, not as a stand-alone sleep-disorder diagnosis.
Development and clinical use
Weaver and colleagues published the 30-item FOSQ in 1997 to measure how sleepiness affects daily activities.
- Catalogue status
- Educational entry
- Production scoring
- Not independently verified
- Mode
- self-report
- Typical use
- Clinician-reviewed intake
- Clinical role
- Sleep-related function support
Administration
A focused client experience
The respondent answers the 30 September 1996 items. A response of 0 means the activity is skipped for another reason, except on the two items that have no 0. An optional note about relationships is stored and not scored.
- One question at a time with visible progress
- Large keyboard-operable response choices
- Previous, next, and answer-review steps
- Clear confirmation that results go to the clinic
The illustration shows layout only. It does not reproduce FOSQ item wording.
Report showcase
Designed to make evidence easy to review
The downloadable synthetic example illustrates report layout using invented response patterns, without patient data or instrument questions.
- Named instrument, version, and provenance
- Item-level response pattern without source wording
- Methodology, references, and clinical boundary
- Responsible clinician review rather than automated conclusions
Clinician review required
Methodology
Understand the measure and its scoring conventions
Lirena scores five subscale means. A subscale with at least one answer from 1 to 4 is the mean of those answers. A subscale with none is 0.00 and is not added to the total. The total is the sum of the five subscale scores, from 0.00 to 20.00. The result supports clinician review and is not a diagnosis.
References
- Original FOSQ paperWeaver TE et al. An instrument to measure functional status outcomes for disorders of excessive sleepiness. Sleep. 1997;20(10):835-843.
Questions
What clinics ask before they evaluate the FOSQ
These answers stay inside educational catalogue scope. They do not replace official manuals or clinician judgement.
Does FOSQ diagnose a sleep disorder?
No. It is a functional-impact self-report. Diagnosis remains a clinician task.
Can I complete FOSQ here?
No. This landing does not collect answers.
How is FOSQ used on Lirena?
As a sleep-intake self-report. Clinicians review domain patterns with sleep history.
Is FOSQ the same as ESS?
No. ESS asks about dozing likelihood. FOSQ asks how sleepiness affects function.