Quality of life profile: from measurement to clinical application.

Quality of life (QoL) can be assessed in an accurate, valid and reliable way by means of standardized QoL questionnaires and is an important endpoint in clinical trials today. The aim of this study is to implement quality of life as a diagnostic tool for problem-oriented follow-up care of cancer patients. This is done in the framework of an intervention study in the area of regional health care research using qualitative analysis and the methodological concept of barrier analysis. We developed the diagnostic tool by generating individual, graphic QoL profiles based on patients' responses to the EORTC QLQ-C30 and the corresponding disease-specific modules BR23 for breast cancer and CR38 for rectal cancer. The clinical application is investigated by assessing physicians' responses. The QoL profile is judged as a useful diagnostic tool by all participating physicians. It enables physicians to assess the QoL of the patient and incorporate the knowledge they gain in their daily practice. Especially in breast cancer follow-up care QoL profiles give added value to both patients and doctors. The next implementation steps have to extend the concept of QoL to larger groups of patients and physicians by overcoming the restraining factors as identified in the barrier analysis.