Distinguishing between enduring and dynamic concussion symptoms: applying Generalisability Theory to the Rivermead Post Concussion Symptoms Questionnaire (RPQ).

ABSTRACT:

Background

The Rivermead Post Concussion Symptoms Questionnaire (RPQ) is a widely-used, 16-item measure of concussion symptoms yet its ability to assess change in the symptom experience over time has come under criticism. We applied Generalisability theory to differentiate between dynamic and enduring aspects of post-concussion symptoms and to examine sources of measurement error in the RPQ.

Materials and methods

Generalisability theory was applied using the longitudinal design with persons as the object of measurement. Patients with a traumatic brain injury (n = 145; aged ≥16 years) were assessed at three time occasions (1, 6 and 12 months post-injury) using the RPQ.

Results

The RPQ showed overall strong generalisability of scores (G = .98) across perso

SUBMITTER: Medvedev ON 

PROVIDER: S-EPMC6166625 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature