BACKGROUND Racism and associated discrimination are pervasive and persistent challenges with multiple cumulative deleterious effects contributing to inequities in various health outcomes. Globally, research over the past decade has shown consistent associations between racism and negative health concerns. Such research confirms that race endures as one of the strongest predictors of poor health...

AIMS To evaluate the homogeneity of the elements of the Substance Dependence Syndrome (SDS) as applied to benzodiazepines (BZDs) by Rasch modelling. MEASUREMENTS The Rasch scaling model was applied to data obtained by administering the SCAN (Schedules for Clinical Assessments in Neuropsychiatry) substance dependence sections. Subsequently, Rasch-homogeneous sets of DSM-III-R and ICD-10 BZD de...

BACKGROUND Although the Functional Assessment of Cancer Therapy--General questionnaire (FACT-G) has been validated few studies have explored the factor structure of the instrument, in particular using non-sample dependent measurement techniques, such as Rasch Models. Furthermore, few studies have explored the relationship between item fit to the Rasch Model and clinical utility. The aim of this...

The objective of this study was to describe the development and initial psychometric analysis of the UK English version of the Duchenne muscular dystrophy FunctionalAbility Self-AssessmentTool (DMDSAT), a patient-reported outcome (PRO) scale designed to measure functional ability in patients with Duchenne muscular dystrophy (DMD). Item selection was made by neuromuscular specialists and a Rasch...

Abstract Quantitative consumer and marketing research is looking back on an era of construct operationalization predominantly based on classical test theory as a technical framework of scale development. Rasch measurement theory provides an alternative framework of measurement. Previous studies demonstrated the potential of Rasch measurement for marketing research from a theoretical viewpoint, ...

OBJECTIVES To demonstrate the use of Rasch analysis by assessing the appropriateness of utilizing the Hospital Anxiety and Depression Scale (HADS) total score (HADS-14) as a measure of psychological distress. DESIGN Cross-sectional, using Rasch analysis. METHODS The HADS was administered to 296 patients attending an out-patient musculoskeletal rehabilitation program. Rasch analysis was cond...

Introduction This study used the Rasch model to evaluate the psychometric properties of the Portuguese version of the Substance Problem Scale (SPS) of the "Global Appraisal of Individual Needs - Initial" for use in Brazil. The SPS measures alcohol and drug problem severity within a DSM-IV-TR framework. The goal of the Rasch analysis was to assess scale dimensionality, item severity, and differe...

Certain criticisms of the use of the Rasch model have been queried in a paper by Bryce. We argue that these criticisms not only remain valid, but are reinforced by recent research on latent trait models. In particular, Bryce fails to present a clear conceptual argument and adopts a very inefficient procedure for testing empirically the fit of the Rasch model. A paper by Bryce (1981) takes issue...

in this study, we investigated the errors native speakers of farsi commit when rating the esl essays, using a many-facet rasch measurement approach. to that end, two native speakers of farsi rated 56 essays which 28 male and female advanced language learners learning farsi as a second language at persian language centre at imam khomeini international university in qazvin, iran wrote on two topi...