An examination of factorial invariance of the Asthma Control Questionnaire among adults with severe asthma.

ABSTRACT:

Background

The Asthma Control Questionnaire (ACQ) is used to assess asthma symptom control. The relationship between the questionnaire items and symptom control has not been fully studied in severe asthmatic patients, and its validity for making comparisons between subgroups of patients is unknown.

Methods

Data was obtained from patients in the United Kingdom Severe Asthma Registry whose symptom control was assessed using the five-item ACQ (ACQ5) (n = 2,951). Confirmatory factor analysis determined whether a latent factor for asthma symptom control, as measured by the ACQ5, was consistent with the data. Measurement invariance was examined in relation to ethnicity, sex and age; this included testing for approximate measurement invariance using Bayesian Structural Equation Mod

SUBMITTER: McDowell R 

PROVIDER: S-EPMC10703262 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature