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Quality of Life Questionnaire (QLQ)
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About Quality of Life Questionnaire (QLQ)
Scale Name
Quality of Life Questionnaire (QLQ)
Author Details
Douglas A. Bigelow, Ph.D., Madeline M. Olson, Susan Smoyer and Linda Stewart
Translation Availability
English
Background/Description
The Quality of Life Questionnaire (QLQ) is a comprehensive self-report tool designed to evaluate the perceived quality of life among individuals. Developed by Bigelow, Gareau, and Young, the QLQ assesses various domains that contribute to an individual’s overall well-being, including physical health, emotional health, social relationships, and environmental factors.
Originally intended for use in clinical and research settings, the QLQ is often administered to individuals with mental health conditions, chronic illnesses, or those undergoing rehabilitation. By measuring subjective well-being, it helps professionals understand how interventions impact patients’ lives beyond clinical outcomes.
This tool is particularly useful for tailoring therapeutic and rehabilitative programs to better meet individual needs. It provides a nuanced perspective on quality of life, making it a valuable resource for psychologists, social workers, and healthcare providers.
Administration, Scoring and Interpretation
- Obtain a copy: Acquire the QLQ from authorized sources or the Western Mental Health Research Center.
- Explain the purpose: Inform participants that the QLQ aims to assess their quality of life to better understand and improve their well-being.
- Provide instructions: Ensure respondents understand how to complete the self-report questions accurately. Offer clarifications for any terms or items that may be unclear.
- Approximate time: The questionnaire typically takes 20–30 minutes to complete.
- Administer the scale: Provide a comfortable, distraction-free environment to facilitate honest and thoughtful responses.
Reliability and Validity
- Reliability: The QLQ demonstrates high internal consistency, with Cronbach’s alpha values exceeding 0.80 in multiple domains. Test-retest reliability has also shown stability over time.
- Validity: The scale has strong content validity, as it was developed based on extensive literature and expert consultation. It correlates well with other quality of life measures, supporting its convergent validity.
Available Versions
Multiple-Items
Reference
Bigelow, D. A., Gareau, M. J., & Young, D. J. (1991). Quality of Life Questionnaire–Respondent Self-Report Version (Interview Schedule). Western Mental Health Research Center, Oregon Health Sciences University, Portland, Oregon.
Important Link
Scale File:
Frequently Asked Questions
Q1: What is the purpose of the Quality of Life Questionnaire?
The QLQ assesses an individual’s perceived quality of life across multiple domains to guide interventions and improve well-being.
Q2: Who can use the QLQ?
The QLQ is suitable for use with individuals experiencing mental health challenges, chronic illnesses, or undergoing rehabilitation.
Q3: Is the QLQ culturally adaptable?
Yes, while primarily developed in English, the QLQ can be adapted for different cultural contexts with proper validation studies.
Q4: How is the QLQ scored?
The responses are scored to provide a detailed profile of quality of life across various domains, with higher scores indicating better perceived well-being.
Q5: Can the QLQ be used in research?
Yes, the QLQ is widely used in research to evaluate the impact of interventions on quality of life outcomes.
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