Abstract
This article provides a brief review of how quality of life (QOL) studies can contribute to the care of cancer patients. The problem of actually defining QOL is considered, and it is emphasized that quality is the presence of positive factors not merely the absence of negative aspects of life. The information that can be gained from using QOL instruments and how this is achieved is outlined. These studies have important implications for health care professionals for side-effects of treatment are often identified that can be helped by nursing intervention. Finally, specific examples of how the implementation of QOL studies has helped modify treatment and patient care are given