Measurement Invariance on the Nine-Item Avoidant/Restrictive Food Intake Disorder Screen (NIAS) by Age and Reporter Status: Comparing ARFID Symptoms Among Self-Reporting Adults and Adolescents and Parent Reports of Children and Adolescents.

ABSTRACT:

Objective

Self-report measures of ARFID symptoms (e.g., Nine-Item Avoidant/Restrictive Food Intake Disorder Screen [NIAS]) are used to assess symptom differences between groups. Measurement invariance techniques clarify if groups interpret a measure similarly, providing a foundation for examining group differences. Considering age and reporter status (e.g., parent vs. self-report), we investigated measurement invariance of the NIAS in (1) self-reporting adults vs. adolescents; (2) parent reports on children vs. adolescents; and (3) parent reports on adolescents vs. adolescent self-report. If measurement invariance was supported, we examined symptom differences.

Methods

Data were from the ARFID Genes and Environment (ARFID-GEN) project.

Results

Self-reporting adults vs

SUBMITTER: Barnhart WR 

PROVIDER: S-EPMC12768410 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature