Quality of Life Index (QLI)

The Quality of Life Index (QLI), Copyright 1984 and 1998 (USA) by Carol Estwing Ferrans and Marjorie Powers, was developed to measure quality of life, defined as “a person’s sense of well-being that stems from satisfaction or dissatisfaction with the areas of life that are important to him/her”(1). The QLI measures importance of, and satisfaction with, different aspects of life.

It has been developed into many alternate versions such as an Arthritis Version and a Cancer Version, and has been translated into many languages. The generic version includes 33 items, using a 6-point likert-type scale, for each section (66 items total). Approximately 10 minutes is required for completion.

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Carol Estwing Ferrans and Marjorie Powers, 1984

Reliability and Validity

QLI Reliability and Validity

To obtain the QLI

The QLI website makes it available for use in non-profit research and non-profit clinical practice, for which there is no charge. For More Information and to Obtain the QLI, visit

Quality of Life Index

Administration, Analysis and Reporting

Statistics Solutions consists of a team of professional methodologists and statisticians that can assist the student or professional researcher in administering the survey instrument, collecting the data, conducting the analyses and explaining the results.

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Ferrans, C. (1990). Development of a quality of life index for patients with cancer. Oncology Nursing Forum, 17(3) suppl, 15-19.