The IWQOL-Lite Clinical Trials Version© (IWQOL-Lite-CT©) was developed for use in the context of clinical trials for obesity, addressing concerns that are specifically relevant to these participants. The 20 items in this instrument cover the full range of concerns in this population (i.e., has content validity) and the items are easily understood and consistently reported as salient and likely to change with 10% weight loss. The IWQOL-Lite-CT© has the potential to support labeling claims, as it was developed and validated in accordance with the Food and Drug Administration’s “Guidance for industry; Patient-reported outcome measures: use in medical product development to support labeling claims, December 2009.”
Interest in the IWQOL-Lite-CT© has been expressed not only for obesity research, but also for other diseases and treatments that affect weight, such as diabetes and severe mental illness.
IWQOL-Lite-CT is available in 49 languages.
Kolotkin, R.L., Ervin, C.M., Meincke, H.H., Højbjerre L., Fehnel, S.E. Development of a clinical trials version of the Impact of Weight on Quality of Life-Lite questionnaire (IWQOL-Lite Clinical Trials Version): Results from two qualitative studies. Clinical Obesity, 2017 Oct;7(5):290-299. doi: 10.1111/cob.12197.
Kolotkin, R.L., Williams, V.S.L., Ervin, C.M., Williams, N., Meincke, H.H., Qin, S., von Huth Smith, L., Fehnel, S.E. Validation of a new measure of quality of life in obesity trials: Impact of Weight on Quality of Life-Lite Clinical Trials Version. Clinical Obesity, 2019 Jun;9(3):e12310. doi: 10.1111/cob.12310. View supporting tables for this publication.
Rosenstock J, Allison D, Birkenfeld AL, et al. Effect of additional oral semaglutide vs sitagliptin on glycated hemoglobin in adults with type 2 diabetes uncontrolled with metformin alone or with sulfonylurea: the PIONEER 3 randomized clinical trial. JAMA. 2019;321 (15):1466–1480, Supplement 1.
Wadden, T.A., Tronieri, J.S., Sugimoto, D., Lund, M.T., Auerbach, P., Jensen, C., Rubino, D. Liraglutide 3.0 mg and Intensive Behavioral Therapy (IBT) for Obesity in Primary Care: The SCALE IBT Randomized Controlled Trial. Obesity (Silver Spring). 2020 Mar;28(3):529-536. doi: 10.1002/oby.22726/.
Garvey, W.T., Birkenfeld, A.L., Dicker, D., et al. Efficacy and Safety of Liraglutide 3.0 mg in Individuals With Overweight or Obesity and Type 2 Diabetes Treated With Basal Insulin: The SCALE Insulin Randomized Controlled Trial. Diabetes Care. 2020 Mar 5. pii: dc191745. doi: 10.2337/dc19-1745.
Kushner RF, Calanna S, Davies M, et al. Semaglutide 2.4 mg for the Treatment of Obesity: Key Elements of the STEP Trials 1 to 5. Obesity (Silver Spring). 2020;28(6):1050-1061. doi:10.1002/oby.22794
2024-P: A Qualitative Study in Obesity to Explore Clinically Meaningful Change on Patient-Reported Outcome (PRO) Measures. Poon, JL, Marshall, C, Johnson, et al., Diabetes Jun 2020, 69 (Supplement 1) 2024-P; DOI: 10.2337/db20-2024-P
Wilding JPH, Batterham RL, Calanna S, Davies M, Van Gaal LF, Lingvay I, McGowan BM, Rosenstock J, Tran MTD, Wadden TA, Wharton S, Yokote K, Zeuthen N, Kushner RF; STEP 1 Study Group. Once-Weekly Semaglutide in Adults with Overweight or Obesity. N Engl J Med. 2021 Feb 10. doi: 10.1056/NEJMoa2032183. Epub ahead of print. PMID: 33567185.
Davies M, Færch L, Jeppesen OK, Pakseresht A, Pedersen SD, Perreault L, Rosenstock J, Shimomura I, Viljoen A, Wadden TA, Lingvay I; STEP 2 Study Group. Semaglutide 2·4 mg once a week in adults with overweight or obesity, and type 2 diabetes (STEP 2): a randomised, double-blind, double-dummy, placebo-controlled, phase 3 trial. Lancet. 2021 Mar 2:S0140-6736(21)00213-0. doi: 10.1016/S0140-6736(21)00213-0.
Licensing for IWQOL-Lite-CT is managed solely through Pattern Health, a passionate team of technologists, clinicians and behavioral researchers whose vision is to make healthcare more efficient and effective by creating products that empower patient self-care and research.
The new digital versions, which can be used standalone or integrated into digital care plans and clinical trials, will be more accessible and engaging for patients while improving the accuracy and reliability of the collected data.
Click the button below to engage Pattern Health with questions or licensing information.
How to Cite IWQOL-Lite-CT
Kolotkin RL, Williams VSL, Ervin CM, Williams N, Meincke HH, Qin S, von Huth Smith L, Fehnel SE. Validation of a new measure of quality of life in obesity trials: Impact of Weight on Quality of Life-Lite Clinical Trials Version. Clin Obes. 2019 Jun;9(3):e12310. doi: 10.1111/cob.12310.
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