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Development and calibration of a novel social relationship item bank to measure health-related quality of life (HRQoL) in Singapore

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 i...

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Autores principales: Kwan, Yu Heng, Uy, Elenore Judy, Bautista, Dianne Carrol, Xin, Xiaohui, Xiao, Yunshan, Lee, Geok Ling, Subramaniam, Mythily, Vaingankar, Janhavi Ajit, Chan, Mei Fen, Kumar, Nisha, Cheung, Yin Bun, Chua, Terrance Siang Jin, Thumboo, Julian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6505203/
https://www.ncbi.nlm.nih.gov/pubmed/31068201
http://dx.doi.org/10.1186/s12955-019-1150-9
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author Kwan, Yu Heng
Uy, Elenore Judy
Bautista, Dianne Carrol
Xin, Xiaohui
Xiao, Yunshan
Lee, Geok Ling
Subramaniam, Mythily
Vaingankar, Janhavi Ajit
Chan, Mei Fen
Kumar, Nisha
Cheung, Yin Bun
Chua, Terrance Siang Jin
Thumboo, Julian
author_facet Kwan, Yu Heng
Uy, Elenore Judy
Bautista, Dianne Carrol
Xin, Xiaohui
Xiao, Yunshan
Lee, Geok Ling
Subramaniam, Mythily
Vaingankar, Janhavi Ajit
Chan, Mei Fen
Kumar, Nisha
Cheung, Yin Bun
Chua, Terrance Siang Jin
Thumboo, Julian
author_sort Kwan, Yu Heng
collection PubMed
description 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 < 0.06 and 1.8% of the total item-pair residuals were flagged for local dependence. The overall SGRM model fit was adequate (p = 0.146). Five items exhibited DIF with respect to age, ethnicity and education, but were retained without modification of scores because they measured important aspects of SR. The SR scores correlated in the hypothesized direction with a self-reported measure of global health (Spearman’s rho = − 0.28, p < 0.001). CONCLUSION: The 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. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1186/s12955-019-1150-9) contains supplementary material, which is available to authorized users.
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spelling pubmed-65052032019-05-10 Development and calibration of a novel social relationship item bank to measure health-related quality of life (HRQoL) in Singapore Kwan, Yu Heng Uy, Elenore Judy Bautista, Dianne Carrol Xin, Xiaohui Xiao, Yunshan Lee, Geok Ling Subramaniam, Mythily Vaingankar, Janhavi Ajit Chan, Mei Fen Kumar, Nisha Cheung, Yin Bun Chua, Terrance Siang Jin Thumboo, Julian Health Qual Life Outcomes Research 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 < 0.06 and 1.8% of the total item-pair residuals were flagged for local dependence. The overall SGRM model fit was adequate (p = 0.146). Five items exhibited DIF with respect to age, ethnicity and education, but were retained without modification of scores because they measured important aspects of SR. The SR scores correlated in the hypothesized direction with a self-reported measure of global health (Spearman’s rho = − 0.28, p < 0.001). CONCLUSION: The 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. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1186/s12955-019-1150-9) contains supplementary material, which is available to authorized users. BioMed Central 2019-05-08 /pmc/articles/PMC6505203/ /pubmed/31068201 http://dx.doi.org/10.1186/s12955-019-1150-9 Text en © The Author(s). 2019 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research
Kwan, Yu Heng
Uy, Elenore Judy
Bautista, Dianne Carrol
Xin, Xiaohui
Xiao, Yunshan
Lee, Geok Ling
Subramaniam, Mythily
Vaingankar, Janhavi Ajit
Chan, Mei Fen
Kumar, Nisha
Cheung, Yin Bun
Chua, Terrance Siang Jin
Thumboo, Julian
Development and calibration of a novel social relationship item bank to measure health-related quality of life (HRQoL) in Singapore
title Development and calibration of a novel social relationship item bank to measure health-related quality of life (HRQoL) in Singapore
title_full Development and calibration of a novel social relationship item bank to measure health-related quality of life (HRQoL) in Singapore
title_fullStr Development and calibration of a novel social relationship item bank to measure health-related quality of life (HRQoL) in Singapore
title_full_unstemmed Development and calibration of a novel social relationship item bank to measure health-related quality of life (HRQoL) in Singapore
title_short Development and calibration of a novel social relationship item bank to measure health-related quality of life (HRQoL) in Singapore
title_sort development and calibration of a novel social relationship item bank to measure health-related quality of life (hrqol) in singapore
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6505203/
https://www.ncbi.nlm.nih.gov/pubmed/31068201
http://dx.doi.org/10.1186/s12955-019-1150-9
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