Mixed-methods development of a new patient-reported outcome instrument for chronic low back pain: part 1—the Patient Assessment for Low Back Pain - Symptoms (PAL-S)

@inproceedings{Martin2018MixedmethodsDO,
  title={Mixed-methods development of a new patient-reported outcome instrument for chronic low back pain: part 1—the Patient Assessment for Low Back Pain - Symptoms (PAL-S)},
  author={Mona L. Martin and Steven I. Blum and Hiltrud Liedgens and Donald M. Bushnell and Kelly Mccarrier and No{\"e}l V. Hatley and Abhilasha Ramasamy and Rainer Freynhagen and Mark S. Wallace and Charles E. Argoff and Mariёlle Eerdekens and Maurits Kok and Donald L Patrick},
  booktitle={Pain},
  year={2018}
}
We describe the mixed-methods (qualitative and quantitative) development and preliminary validation of the Patient Assessment for Low Back Pain-Symptoms (PAL-S), a patient-reported outcome measure for use in chronic low back pain (cLBP) clinical trials. Qualitative methods (concept elicitation and cognitive interviews) were used to identify and refine symptom concepts and quantitative methods (classical test theory and Rasch measurement theory) were used to evaluate item- and scale-level… CONTINUE READING