pubmed-article:11042583 | pubmed:abstractText | To determine the impact of care on quality of life (QOL), or to detect a change in QOL over time, measures of QOL must remain stable when QOL is stable (test-retest reliability) and change when QOL changes (responsiveness). This study addresses these issues for the McGill Quality of Life Questionnaire (MQOL). Unlike other studies that use disease status to indicate whether QOL has remained stable or changed, in this study the patient determines QOL stability or change. The authors also sought to clarify the determinants of "good" and "bad" days for oncology patients. | lld:pubmed |