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Functional Outcomes of Sleep Questionnaire

The Functional Outcomes of Sleep Questionnaire (FOSQ) is a scientifically validated instrument designed to assess the impact of excessive sleepiness on daily functioning and quality of life. It evaluates how sleep problems affect key areas such as productivity, social interactions, vigilance, and energy levels. The FOSQ contains several items rated by individuals based on the difficulty they experience performing everyday activities due to tiredness or lack of alertness. The total score provides valuable insight into the functional consequences of sleep disorders like sleep apnea or insomnia.

3 minutes to complete

Eligibility

The Functional Outcomes of Sleep Questionnaire is typically completed by individuals over the age of 18 who have experienced sleep disturbances or disorders.

Questions for Functional Outcomes of Sleep Questionnaire

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Questions

1.

Do you have difficulty concentrating on the things you do because you are sleepy or tired?

The answer should be a single choice:
  1. No difficulty
  2. Yes, a little difficulty
  3. Yes, moderate difficulty
  4. Yes, extreme difficulty
2.

Do you generally have difficulty remembering things because you are sleepy or tired?

The answer should be a single choice:
  1. No difficulty
  2. Yes, a little difficulty
  3. Yes, moderate difficulty
  4. Yes, extreme difficulty
3.

Do you have difficulty finishing a meal because you become sleepy or tired?

The answer should be a single choice:
  1. No difficulty
  2. Yes, a little difficulty
  3. Yes, moderate difficulty
  4. Yes, extreme difficulty
4.

Do you have difficulty working on a hobby (e.g., sewing, collecting, gardening) because you are sleepy or tired?

The answer should be a single choice:
  1. No difficulty
  2. Yes, a little difficulty
  3. Yes, moderate difficulty
  4. Yes, extreme difficulty
5.

Do you have difficulty doing work around the house (e.g., cleaning, laundry, taking out trash, repair) because you are sleepy or tired?

The answer should be a single choice:
  1. No difficulty
  2. Yes, a little difficulty
  3. Yes, moderate difficulty
  4. Yes, extreme difficulty
6.

Do you have difficulty operating a motor vehicle for short distances (less than 100 miles) because you are sleepy or tired?

The answer should be a single choice:
  1. No difficulty
  2. Yes, a little difficulty
  3. Yes, moderate difficulty
  4. Yes, extreme difficulty
7.

Do you have difficulty operating a motor vehicle for long distances (greater than 100 miles) because you are sleepy or tired?

The answer should be a single choice:
  1. No difficulty
  2. Yes, a little difficulty
  3. Yes, moderate difficulty
  4. Yes, extreme difficulty
8.

Do you have difficulty getting things done because you are too sleepy or tired to drive or take public transportation?

The answer should be a single choice:
  1. No difficulty
  2. Yes, a little difficulty
  3. Yes, moderate difficulty
  4. Yes, extreme difficulty
9.

Do you have difficulty taking care of financial affairs and paperwork (e.g., writing checks, paying bills, keeping records, filling tax forms) because you are sleepy or tired?

The answer should be a single choice:
  1. No difficulty
  2. Yes, a little difficulty
  3. Yes, moderate difficulty
  4. Yes, extreme difficulty
10.

Do you have difficulty performing employed or volunteer work because you are sleepy or tired?

The answer should be a single choice:
  1. No difficulty
  2. Yes, a little difficulty
  3. Yes, moderate difficulty
  4. Yes, extreme difficulty

Scoring

Scale Score
No difficulty 1
Yes, a little difficulty 2
Yes, moderate difficulty 3
Yes, extreme difficulty 4

Assessments Similar to Functional Outcomes of Sleep Questionnaire

  • Impact of Sleep on Daily Functioning Questionnaire
  • Sleep Quality and Performance Assessment
  • Sleep Effects on Cognitive Functioning Survey
  • Functional Impairment Scale for Sleep Disorders
  • Sleep-Related Quality of Life Inventory
  • Sleep Patterns and Functional Outcomes Assessment

Here are some FAQs and additional information
on
Functional Outcomes of Sleep Questionnaire

What is the Functional Outcomes of Sleep Questionnaire used for?

The FOSQ measures how sleepiness impacts a person’s ability to perform daily tasks and maintain quality of life.

How is the FOSQ scored?

It includes multiple items rated by difficulty level; responses are used to calculate domain and total scores — higher scores indicate better functional status.

Who can use the FOSQ?

The questionnaire is suitable for adults experiencing sleep problems and is commonly used by clinicians and researchers studying sleep disorders.

What sleep disorders can the FOSQ help evaluate?

It’s primarily used to assess functional impairments associated with sleep apnea, insomnia, narcolepsy, and other conditions causing excessive daytime sleepiness.

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