Development and psychometrics of the English version of the Itch Cognitions Questionnaire.

<h4>Background</h4>The aim of this study was to validate the English version of the Itch Cognition Questionnaire in a sample of patients with chronic itch due to psoriasis or atopic dermatitis. An English-language version of an instrument assessing itch-related cognitions is needed since...

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Autores principales:	Carolyn J Heckman, Christina Schut, Mary Riley, Anke Ehlers, Rodrigo Valdes-Rodriguez, Jörg Kupfer, Uwe Gieler, Jerod L Stapleton
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/47de77cfb165461d9b2a9f890566a34d
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spelling	oai:doaj.org-article:47de77cfb165461d9b2a9f890566a34d2021-12-02T20:11:29ZDevelopment and psychometrics of the English version of the Itch Cognitions Questionnaire.1932-620310.1371/journal.pone.0230585https://doaj.org/article/47de77cfb165461d9b2a9f890566a34d2020-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0230585https://doaj.org/toc/1932-6203<h4>Background</h4>The aim of this study was to validate the English version of the Itch Cognition Questionnaire in a sample of patients with chronic itch due to psoriasis or atopic dermatitis. An English-language version of an instrument assessing itch-related cognitions is needed since cognitions can contribute to a worsening of itch, and chronic itch is prevalent in English-speaking counties and internationally.<h4>Methods</h4>The German Itch Cognitions Questionnaire was translated into English, and cognitive interviewing was conducted to finalize item wording. Internal and test-retest reliability, item discrimination, responsiveness to change, and construct, convergent, and discriminant validity were assessed in a national sample of 137 individuals with chronic itch due to atopic dermatitis or psoriasis recruited online.<h4>Results</h4>Internal reliability was high with Cronbach's alphas of 0.93 for the Catastrophizing subscale and 0.88-0.90 for Coping. The Pearson's correlation assessing 1-month test-retest reliability for the Catastrophizing subscale was r = 0.62 and for the Coping subscale was r = 0.61. The corrected item-total correlation revealed that items were relatively consistent with the scores for the subscales (with correlations ranging from 0.58 to 0.79), indicating very good item discrimination. Results of factor analysis, convergent and discriminant, and responsiveness to change analyses provided evidence for validity.<h4>Conclusions</h4>This study showed good psychometric characteristics of the English version of the Itch Cognitions Questionnaire. We suggest that future studies investigate the use of the measure in clinical practice to assist with treatment planning and outcome assessment related to itch as well as address study limitations such as sampling and replication.Carolyn J HeckmanChristina SchutMary RileyAnke EhlersRodrigo Valdes-RodriguezJörg KupferUwe GielerJerod L StapletonPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 15, Iss 3, p e0230585 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Carolyn J Heckman Christina Schut Mary Riley Anke Ehlers Rodrigo Valdes-Rodriguez Jörg Kupfer Uwe Gieler Jerod L Stapleton Development and psychometrics of the English version of the Itch Cognitions Questionnaire.
description	<h4>Background</h4>The aim of this study was to validate the English version of the Itch Cognition Questionnaire in a sample of patients with chronic itch due to psoriasis or atopic dermatitis. An English-language version of an instrument assessing itch-related cognitions is needed since cognitions can contribute to a worsening of itch, and chronic itch is prevalent in English-speaking counties and internationally.<h4>Methods</h4>The German Itch Cognitions Questionnaire was translated into English, and cognitive interviewing was conducted to finalize item wording. Internal and test-retest reliability, item discrimination, responsiveness to change, and construct, convergent, and discriminant validity were assessed in a national sample of 137 individuals with chronic itch due to atopic dermatitis or psoriasis recruited online.<h4>Results</h4>Internal reliability was high with Cronbach's alphas of 0.93 for the Catastrophizing subscale and 0.88-0.90 for Coping. The Pearson's correlation assessing 1-month test-retest reliability for the Catastrophizing subscale was r = 0.62 and for the Coping subscale was r = 0.61. The corrected item-total correlation revealed that items were relatively consistent with the scores for the subscales (with correlations ranging from 0.58 to 0.79), indicating very good item discrimination. Results of factor analysis, convergent and discriminant, and responsiveness to change analyses provided evidence for validity.<h4>Conclusions</h4>This study showed good psychometric characteristics of the English version of the Itch Cognitions Questionnaire. We suggest that future studies investigate the use of the measure in clinical practice to assist with treatment planning and outcome assessment related to itch as well as address study limitations such as sampling and replication.
format	article
author	Carolyn J Heckman Christina Schut Mary Riley Anke Ehlers Rodrigo Valdes-Rodriguez Jörg Kupfer Uwe Gieler Jerod L Stapleton
author_facet	Carolyn J Heckman Christina Schut Mary Riley Anke Ehlers Rodrigo Valdes-Rodriguez Jörg Kupfer Uwe Gieler Jerod L Stapleton
author_sort	Carolyn J Heckman
title	Development and psychometrics of the English version of the Itch Cognitions Questionnaire.
title_short	Development and psychometrics of the English version of the Itch Cognitions Questionnaire.
title_full	Development and psychometrics of the English version of the Itch Cognitions Questionnaire.
title_fullStr	Development and psychometrics of the English version of the Itch Cognitions Questionnaire.
title_full_unstemmed	Development and psychometrics of the English version of the Itch Cognitions Questionnaire.
title_sort	development and psychometrics of the english version of the itch cognitions questionnaire.
publisher	Public Library of Science (PLoS)
publishDate	2020
url	https://doaj.org/article/47de77cfb165461d9b2a9f890566a34d
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Development and psychometrics of the English version of the Itch Cognitions Questionnaire.

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