The Impact of Weight on Quality of Life-Lite (IWQOL-Lite)

Developed by Ronnie Kolotkin, Ph.D.,  IWQOL-Lite© (The Impact of Weight on Quality of Life-Lite) is a survey instrument that is used to quantitatively assess an individual’s perception of how their weight affects their day-to-day life. This instrument is especially valuable to obesity researchers, clinicians, psychologists, medical device and/or pharmaceutical companies seeking to validate the effectiveness of their treatments for obesity using metrics that go beyond the physical measurements of weight loss.

IWQOL-Lite© is a validated, 31-item, self-report measure of obesity-specific quality of life available in more than 80 languages. In addition to a total score, there are scores on five domains:

  • Physical function
  • Self-esteem
  • Sexual life
  • Public distress
  • Work

For more information, please refer to this summary. For IWQOL-Lite publications, please visit this web page. To visit Quality of Life Consulting, PLLC, please visit this website.

Licensing IWQOL-Lite©

Since this is a copyrighted instrument, Duke University grants royalty-bearing, nonexclusive licenses for the IWQOL-Lite. The royalties are:

  • US $10 per subject for commercially-funded studies
  • US $5 per subject for studies funded by government, grants, and non-profits.
  • US $3 per administration for clinical practice.

There is a minimum of 10 patients or subjects.

For more information please fill out the form on this web page or you may directly contact Kathy Emerson