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Psychometric testing of the Norwegian Diabetes Health Profile (DHP-18) in patients with type 1 diabetes

OBJECTIVE: The Diabetes Health Profile-18 (DHP-18) was developed to measure disease-specific health-related quality of life. It has been translated into Norwegian but remains invalidated. The purpose of this paper was to examine the psychometric properties of the Norwegian DHP-18. RESEARCH DESIGN AN...

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Autores principales: Jelsness-Jørgensen, Lars-Petter, Jensen, Øystein, Gibbs, Charlotte, Bekkhus Moe, Ragnar, Hofsø, Dag, Bernklev, Tomm
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BMJ Publishing Group 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6304096/
https://www.ncbi.nlm.nih.gov/pubmed/30613400
http://dx.doi.org/10.1136/bmjdrc-2018-000541
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author Jelsness-Jørgensen, Lars-Petter
Jensen, Øystein
Gibbs, Charlotte
Bekkhus Moe, Ragnar
Hofsø, Dag
Bernklev, Tomm
author_facet Jelsness-Jørgensen, Lars-Petter
Jensen, Øystein
Gibbs, Charlotte
Bekkhus Moe, Ragnar
Hofsø, Dag
Bernklev, Tomm
author_sort Jelsness-Jørgensen, Lars-Petter
collection PubMed
description OBJECTIVE: The Diabetes Health Profile-18 (DHP-18) was developed to measure disease-specific health-related quality of life. It has been translated into Norwegian but remains invalidated. The purpose of this paper was to examine the psychometric properties of the Norwegian DHP-18. RESEARCH DESIGN AND METHODS: Participants with type 1 diabetes were recruited from three outpatient clinics in Norway. Clinical and sociodemographic data were collected, and participants completed the DHP-18 and the Short-Form 36 (SF-36). Descriptive analysis, frequencies, t-tests and the chi-squared tests were used. Principal axis factoring (PAF) and confirmatory factor analysis (CFA) were used. Convergent validity was tested using Spearman’s correlation between the DHP-18 and SF-36. Reliability was tested using Cronbach’s alpha and intraclass correlation coefficient. RESULTS: In total, 288 patients were included. No floor and ceiling effects were found. A forced PAF analysis revealed that three questions had an eigenvalue below 0.40. In the unforced PAF analysis, one question loaded below 0.40, while three questions loaded into a fourth factor. The correlation between the DHP-18 and SF-36 dimensions was low to moderate. Problematic internal consistency was observed for the disinhibited eating dimension in the forced PAF and in the suggested fourth dimension in the unforced PAF. CFA revealed poor fit. The test–retest reliability displayed good to excellent values, but responsiveness was limited. CONCLUSIONS: Problematic issues were identified regarding factor structure, item loadings, internal consistency and responsiveness. Further evaluation of responsiveness is particularly recommended, and using a revised 14-item DHP version is suggested.
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spelling pubmed-63040962019-01-04 Psychometric testing of the Norwegian Diabetes Health Profile (DHP-18) in patients with type 1 diabetes Jelsness-Jørgensen, Lars-Petter Jensen, Øystein Gibbs, Charlotte Bekkhus Moe, Ragnar Hofsø, Dag Bernklev, Tomm BMJ Open Diabetes Res Care Psychosocial Research OBJECTIVE: The Diabetes Health Profile-18 (DHP-18) was developed to measure disease-specific health-related quality of life. It has been translated into Norwegian but remains invalidated. The purpose of this paper was to examine the psychometric properties of the Norwegian DHP-18. RESEARCH DESIGN AND METHODS: Participants with type 1 diabetes were recruited from three outpatient clinics in Norway. Clinical and sociodemographic data were collected, and participants completed the DHP-18 and the Short-Form 36 (SF-36). Descriptive analysis, frequencies, t-tests and the chi-squared tests were used. Principal axis factoring (PAF) and confirmatory factor analysis (CFA) were used. Convergent validity was tested using Spearman’s correlation between the DHP-18 and SF-36. Reliability was tested using Cronbach’s alpha and intraclass correlation coefficient. RESULTS: In total, 288 patients were included. No floor and ceiling effects were found. A forced PAF analysis revealed that three questions had an eigenvalue below 0.40. In the unforced PAF analysis, one question loaded below 0.40, while three questions loaded into a fourth factor. The correlation between the DHP-18 and SF-36 dimensions was low to moderate. Problematic internal consistency was observed for the disinhibited eating dimension in the forced PAF and in the suggested fourth dimension in the unforced PAF. CFA revealed poor fit. The test–retest reliability displayed good to excellent values, but responsiveness was limited. CONCLUSIONS: Problematic issues were identified regarding factor structure, item loadings, internal consistency and responsiveness. Further evaluation of responsiveness is particularly recommended, and using a revised 14-item DHP version is suggested. BMJ Publishing Group 2018-12-06 /pmc/articles/PMC6304096/ /pubmed/30613400 http://dx.doi.org/10.1136/bmjdrc-2018-000541 Text en © Author(s) (or their employer(s)) 2018. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ. This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0
spellingShingle Psychosocial Research
Jelsness-Jørgensen, Lars-Petter
Jensen, Øystein
Gibbs, Charlotte
Bekkhus Moe, Ragnar
Hofsø, Dag
Bernklev, Tomm
Psychometric testing of the Norwegian Diabetes Health Profile (DHP-18) in patients with type 1 diabetes
title Psychometric testing of the Norwegian Diabetes Health Profile (DHP-18) in patients with type 1 diabetes
title_full Psychometric testing of the Norwegian Diabetes Health Profile (DHP-18) in patients with type 1 diabetes
title_fullStr Psychometric testing of the Norwegian Diabetes Health Profile (DHP-18) in patients with type 1 diabetes
title_full_unstemmed Psychometric testing of the Norwegian Diabetes Health Profile (DHP-18) in patients with type 1 diabetes
title_short Psychometric testing of the Norwegian Diabetes Health Profile (DHP-18) in patients with type 1 diabetes
title_sort psychometric testing of the norwegian diabetes health profile (dhp-18) in patients with type 1 diabetes
topic Psychosocial Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6304096/
https://www.ncbi.nlm.nih.gov/pubmed/30613400
http://dx.doi.org/10.1136/bmjdrc-2018-000541
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