Psychometrics of inflammatory back pain criteria in the US population.

ABSTRACT:

Objectives

Evaluation of axial spondyloarthritis relies on capturing various inflammatory back pain (IBP) features represented in different criteria. These criteria are likely to be interpreted differently across demographic subpopulations. We examined IBP criteria dimensionality and differential item functioning (DIF) among different age, gender, and race groups using a nationally representative sample.

Methods

We utilised the National Health and Nutrition Examination Survey (NHANES) 2009-2010 dataset, a US nationally representative data collection with demographic weighting. The Arthritis Questionnaire (ARQ) within NHANES included questions from published Calin, European Spondyloarthropathy Study Group, and Berlin criteria (8a and 7b). Confirmatory factor analysis (CFA) wa

SUBMITTER: Hwang MC 

PROVIDER: S-EPMC12777957 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature