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The European Organization for Research and Treatment of Cancer QLQ-C30: a quality-of-life instrument for use in international clinical trials in oncology.
TLDR
The reliability and validity of the EORTC QLQ-C30 questionnaire were highly consistent across the three language-cultural groups studied: patients from English-speaking countries, Northern Europe, and Southern Europe.
Doctor-patient communication: a review of the literature.
Measuring psychological and physical distress in cancer patients: structure and application of the Rotterdam Symptom Checklist.
TLDR
Use of the Rotterdam Symptom Checklist (RSCL) to measure psychological and physical distress as experienced by cancer patients, and the current components of the RSCL and the use of individual and disease specific symptoms are discussed.
Application of the multidimensional fatigue inventory (MFI-20) in cancer patients receiving radiotherapy.
TLDR
The highly similar results in the Dutch and Scottish sample suggest that the portrayal of fatigue using the MFI-20 is quite robust, and the psychometric properties of the multidimensional fatigue inventory are established further in cancer patients.
Application of the multidimensional fatigue inventory (MFI-20) in cancer patients receiving radiotherapy.
TLDR
The highly similar results in the Dutch and Scottish sample suggest that the portrayal of fatigue using the MFI-20 is quite robust, and the psychometric properties of the multidimensional fatigue inventory are established further in cancer patients.
Is a single-item visual analogue scale as valid, reliable and responsive as multi-item scales in measuring quality of life?
TLDR
The VAS is an instrument with good validity, excellent reliability, moderate distribution- based responsiveness and good anchor-based responsiveness compared to multi-item questionnaires, and its use is recommended in clinical trials to assess global quality of life.
Quality of life in patients with Parkinson's disease: development of a questionnaire.
TLDR
The PDQL is a relevant, reliable, and valid measure of the quality of life of patients with Parkinson's disease and correlated highly with the corresponding scales of the standard quality oflife indices.
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