Refining Scale Measurement: Reassessing Oral Impacts on Daily Performances Properties With Item Response Theory.

ABSTRACT:

Objectives

Many oral health-related quality of life instruments have been developed but few have undergone a comprehensive psychometric assessment. One commonly used measure is the Oral Impact on Daily Performance (OIDP). This study revised the configural and metric properties as well as the performance of items based on Item Response Theory (IRT) of a dichotomous-item version of OIDP in Brazil.

Methods

The nine-item dichotomous version of the OIDP was analysed using data from a nationally representative sample from the Oral Health Survey (SBBrasil 2010). It consisted of 30 064 individuals aged 12 to 75 and was split into two partitions comprising n₁ = 20 040 and n₂ = 10 024, respectively. Confirmatory factor analyses (CFA) were conducted on the larger

SUBMITTER: Celeste RK 

PROVIDER: S-EPMC12808854 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature