: The instrument has been linguistically validated in over 90 languages . Accessing the Instrument (PDF & Licensing)
Items are typically rated on a 5-point Likert scale. Higher scores represent better health-related quality of life (HRQOL). Key Features for Clinical Research Sensitivity to Change:
IWQOL-Lite-CT (Impact of Weight on Quality of Life-Lite Clinical Trials Version) is a specialized 20-item patient-reported outcome (PRO) tool used to measure weight-related quality of life in obesity clinical trials. Academia.edu
Extensive validation across major trials (such as the STEP program for semaglutide) has confirmed its reliability:
The Physical Function composite, a sub‑set of the Physical domain, comprises five of these seven items: trouble bending over; tired or winded; unable to stand comfortably; not physically active; and unable to walk far/quickly. iwqol-lite-ct pdf
The "CT" version emphasizes responsiveness, ensuring that even moderate weight loss (or gain) is accurately captured in the scores. Why Use the IWQOL-Lite-CT?
The impact of weight on social interactions, relationships, and work performance. Response Scale
A critical 5-item subset focused specifically on how weight impacts general and specific physical activities. Real-World Application Impact of Weight on Quality of Life (IWQOL©)
Disclaimer: This article is for informational purposes only. Researchers should always obtain proper licensing and follow the most current guidelines from the copyright holder before using the IWQOL-Lite-CT in any research or clinical setting. All trademarks and copyrighted materials are the property of their respective owners. : The instrument has been linguistically validated in
: Responses are converted into a scale where higher scores reflect better functioning and quality of life. Responsive to Change : It is designed to detect meaningful within-patient changes
If you want, I can:
Comprises 20 items, offering higher efficiency in clinical settings compared to longer tools.
Assessing the ability to perform daily tasks, mobility, and physical limitations caused by weight. Key Features for Clinical Research Sensitivity to Change:
It is designed to detect even small improvements in quality of life as a patient loses weight.
IWQOL-Lite© Assessing the impact of weight on quality of life in adults. The Impact of Weight on Quality of Life-Lite (IWQOL-Lite) Quality of Life Consulting
For commercial use in clinical trials or any other research involving licensing fees, permission must be obtained through the official licensing channels. The licensing process ensures proper use of the instrument and supports ongoing validation and translation efforts.