BACKGROUND The Family Satisfaction with End-of-Life Care is an internationally used measure of satisfaction with cancer care. However, the Family Satisfaction with End-of-Life Care has not been studied for equivalence of item endorsement across different socio-demographic groups using differential item functioning. AIMS The aims of this secondary data analysis were (1) to examine potential di...

Measures of magnitude and impact of differential item functioning (DIF) at the item and scale level, respectively are presented and reviewed in this paper. Most measures are based on item response theory models. Magnitude refers to item level effect sizes, whereas impact refers to differences between groups at the scale score level. Reviewed are magnitude measures based on group differences in ...

OBJECTIVE To describe the development and psychometric properties of the Spinal Cord Injury--Quality of Life (SCI-QOL) Resilience item bank and short form. DESIGN Using a mixed-methods design, we developed and tested a resilience item bank through the use of focus groups with individuals with SCI and clinicians with expertise in SCI, cognitive interviews, and item-response theory based analyt...

BACKGROUND The study aimed to further evaluate the psychometric properties of one recently developed oral health related quality of life (OHRQoL) instrument (PedsQL Oral Health Scale), including student self-report and parent-proxy report. Specifically, we tested the item validity,threshold order, local dependency, and differential item functioning (DIF) across gender and rater. METHODS This ...

Measurement professionals cannot come to an agreement on the definition of the term „item fairness‟. In this paper a continuous measure of item unfairness is proposed. The more the unfairness measure deviates from zero, the less fair the item is. If the measure exceeds the cutoff value, the item is identified as definitely unfair. The new approach can identify unfair items that would not be ide...

OBJECTIVES The present study evaluated the measurement invariance of a 7-item scale designed to assess elder neglect across three groups of informants: Older adults, family members, and home care workers. In addition, differential item functioning (DIF) was evaluated in order to examine whether individuals of certain characteristics have a different probability of endorsing certain items even a...

To date, many studies have been conducted to compare the performance of different DIF procedures using simulated data sets. However, some results from these simulation studies are inconsistent with one other (e.g., Hidalgo & López-Pina, 2004; Jodoin & Gierl, 2001). This study used real data to systematically investigate the consistencies of DIF detection and effect size among three widely-used ...

BACKGROUND Depression is a common complication in type 2 diabetes (DM2), affecting 10-30% of patients. Since depression is underrecognized and undertreated, it is important that reliable and validated depression screening tools are available for use in patients with DM2. The Edinburgh Depression Scale (EDS) is a widely used method for screening depression. However, there is still debate about t...

This study aims to validate the Dutch-Flemish PROMIS pediatric item banks v2.0 Anxiety and Depressive Symptoms, short forms 8a, computerized adaptive tests (CATs) in a general Dutch population provide reference data. Participants (N = 2,893, aged 8–18), recruited by two internet survey providers, completed both banks. These were assessed on unidimensionality, local independence, monotonicity, G...

Multistage tests are a widely used and efficient type of test presentation that aims to provide accurate ability estimates while keeping the relatively short. typically rely on psychometric framework item response theory. Violations models other assumptions underlying multistage test, such as differential functioning, can lead inaccurate unfair measurements. There is practical need for methods ...