A preliminary path analysis of expectancy and patient-provider encounter in an open-label randomized controlled trial of spinal manipulation for cervicogenic headache.

@article{Haas2010APP,
  title={A preliminary path analysis of expectancy and patient-provider encounter in an open-label randomized controlled trial of spinal manipulation for cervicogenic headache.},
  author={Mitchell Haas and Mikel Aickin and Darcy Vavrek},
  journal={Journal of manipulative and physiological therapeutics},
  year={2010},
  volume={33 1},
  pages={5-13}
}
OBJECTIVE The purpose of this article was to present a preliminary model to identify the effects of expectancy of treatment success and the patient-provider encounter (PPE) on outcomes in an open-label randomized trial. METHODS Eighty participants with chronic cervicogenic headache (CGH) were randomized to 4 groups: 2 levels of treatment dose (8 or 16) and 2 levels of therapy from a chiropractor (spinal manipulation or light massage). Providers were instructed to have equal enthusiasm for all… CONTINUE READING