Differential Item Functioning and Clinical Utility of the Subjective Memory Complaints Questionnaire in a Multi-Ethnic Cohort.

ABSTRACT:

Introduction

This study evaluated the psychometric properties of the Subjective Memory Complaints Questionnaire (SMCQ) in a non-Hispanic White (NHW) and Mexican American (MA) sample from Texas in the USA.

Methods

Data were obtained from the Health and Aging Brain Study - Health Disparities (HABS-HD; N = 1,691, age = 66.5 ± 8.7, education = 12.4 ± 4.8, 60.6% female, 33.2% MA Spanish speaking). Unidimensionality of the SMCQ was evaluated with confirmatory factor analysis. Differential item functioning (DIF) of the SMCQ was assessed across age, sex, education, and ethnicity/language using item response theory/logistic ordinal regression. Associations of the SMCQ in relation to cognitive status, Alzheimer's disease (AD) blood-based biomarkers, and psychological distress were exa

SUBMITTER: Ochoa Lopez AP 

PROVIDER: S-EPMC11930848 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature