Development and psychometric evaluation of the PMR-Impact Scale: a new patient reported outcome measure for polymyalgia rheumatica.

ABSTRACT:

Objectives

PMR causes pain, stiffness and disability in older adults. Measuring the impact of the condition from the patient's perspective is vital to high-quality research and patient-centred care, yet there are no validated patient-reported outcome measures (PROMs) for PMR. We set out to develop and psychometrically evaluate a PMR-specific PROM.

Methods

Two cross-sectional postal surveys of people with a confirmed diagnosis of PMR were used to provide data for field testing and psychometric evaluation. A total of 256 participants completed the draft PROM. Distribution of item responses was examined, and exploratory factor analysis and Rasch analysis were used to inform item reduction, formation of dimension structure and scoring system development. Some 179 participants co

SUBMITTER: Twohig H 

PROVIDER: S-EPMC9891434 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature