Confirmatory structural validation and refinement of the Recurrent Urinary Tract Infection Symptom Scale.

ABSTRACT:

Objectives

To confirm the structural validity of the Recurrent Urinary Tract Infection Symptom Scale (RUTISS), determining whether a bifactor model appropriately fits the questionnaire's structure and identifying areas for refinement. Used in conjunction with established clinical testing methods, this patient-reported outcome measure addresses the urgent need to validate the patient perspective.

Patients and methods

A clinically and demographically diverse sample of 389 people experiencing recurrent UTI across 37 countries (96.9% female biological sex, aged 18-87 years) completed the RUTISS online. A bifactor graded response model was fitted to the data, identifying potential items for deletion if they indicated significant differential item functioning (DIF) based on sociod

SUBMITTER: Newlands AF 

PROVIDER: S-EPMC10869661 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature