Dataset Information
Development and calibration of a novel social relationship item bank to measure health-related quality of life (HRQoL) in Singapore.
Ontology highlight
ABSTRACT: Background
Social relationships (SR) is an important domain of health-related quality of life. We developed and calibrated a novel item bank to measure SR in Singapore, a multi-ethnic city in Southeast Asia.Methods
We developed an initial candidate pool of 51 items from focus groups, individual in-depth interviews and existing instruments that had been developed and/or validated for use in Singapore. We administered all items in English to a multi-stage sample of subjects, stratified for age and gender, with and without medical conditions, recruited from community and hospital settings. We calibrated their responses using Samejima's Graded Response Model (SGRM). We evaluated a final 30-item bank with respect to Item Response Theory (IRT) model assumptions, model fit, differential item functioning (DIF), and concurrent and known-groups validity.Results
Among 503 participants (47.7% male, 41.4% above 50?years old, 34.0% Chinese, 33.6% Malay and 32.4% Indian), bi-factor model analyses supported essential unidimensionality: explained common variance of the general factor was 0.805 and omega hierarchical was 0.98. Local independence was deemed acceptable: the average absolute residual correlations were?ConclusionThe 30-item SR item bank has shown acceptable psychometric properties. Future studies to evaluate the validity of SR scores when items are administered adaptively are needed.
SUBMITTER: Kwan YH
PROVIDER: S-EPMC6505203 | biostudies-literature | 2019 May
REPOSITORIES: biostudies-literature
Publications
Development and calibration of a novel social relationship item bank to measure health-related quality of life (HRQoL) in Singapore.
Health and quality of life outcomes 20190508 1
<h4>Background</h4>Social relationships (SR) is an important domain of health-related quality of life. We developed and calibrated a novel item bank to measure SR in Singapore, a multi-ethnic city in Southeast Asia.<h4>Methods</h4>We developed an initial candidate pool of 51 items from focus groups, individual in-depth interviews and existing instruments that had been developed and/or validated for use in Singapore. We administered all items in English to a multi-stage sample of subjects, strati ...[more]