Variability and sample size requirements of quality-of-life measures: a randomized study of three major questionnaires.

@article{Cheung2005VariabilityAS,
  title={Variability and sample size requirements of quality-of-life measures: a randomized study of three major questionnaires.},
  author={Yin Bun Cheung and Cynthia Goh and Julian Thumboo and K S Khoo and J. T. K. Wee},
  journal={Journal of clinical oncology : official journal of the American Society of Clinical Oncology},
  year={2005},
  volume={23 22},
  pages={4936-44}
}
PURPOSE To compare the variability and sample size requirements of the global quality-of-life (QOL) scores of the following three major QOL instruments: the Functional Assessment of Cancer Therapy-General (FACT-G), Functional Living Index-Cancer (FLIC), and European Organisation for Research and Treatment of Cancer Core Quality of Life Questionnaire C30 (EORTC QLQ-C30). PATIENTS AND METHODS Cancer patients were randomly assigned to answer two of the three instruments using an incomplete block… CONTINUE READING

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