Assessing differential item functioning for the Social Appearance Anxiety Scale: a Scleroderma atient-centred Intervention Network (SPIN) Cohort Study.

ABSTRACT:

Objectives

The Social Appearance Anxiety Scale (SAAS) is a 16-item questionnaire developed to evaluate fear of appearance-based evaluation by others. The primary objective of this research was to investigate the existence of differential item functioning (DIF) for the 16 SAAS items, comparing patients who completed the SAAS in English and French, either to confirm that scores are comparable or provide guidance on calculating comparable scores. A secondary research objective was to investigate the existence of DIF based on sex and disease status. A tertiary research objective was to assess DIF related to language, sex, and disease status on the recently developed SAAS-5.

Design

This was a cross-sectional analysis using baseline data from patients enrolled in the Scleroderma P

SUBMITTER: Sommer SJ 

PROVIDER: S-EPMC7552836 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature