Internal consistency reliability is a poor predictor of responsiveness

@article{Puhan2005InternalCR,
  title={Internal consistency reliability is a poor predictor of responsiveness},
  author={Milo Alan Puhan and Dianne M. Bryant and Gordon H. Guyatt and Diane M. Heels-Ansdell and Holger J. Sch{\"u}nemann},
  journal={Health and Quality of Life Outcomes},
  year={2005},
  volume={3},
  pages={33 - 33}
}
BACKGROUND Whether responsiveness represents a measurement property of health-related quality of life (HRQL) instruments that is distinct from reliability and validity is an issue of debate. We addressed the claims of a recent study, which suggested that investigators could rely on internal consistency to reflect instrument responsiveness. METHODS 516 patients with chronic obstructive pulmonary disease or knee injury participating in four longitudinal studies completed generic and disease… CONTINUE READING

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