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Article: Validation of the 5-D Itch Scale in Three Ethnic Groups and Exploring Optimal Cutoff Values Using the Itch Numerical Rating Scale
Title | Validation of the 5-D Itch Scale in Three Ethnic Groups and Exploring Optimal Cutoff Values Using the Itch Numerical Rating Scale |
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Authors | |
Issue Date | 2021 |
Citation | BioMed Research International, 2021, v. 2021, article no. 7640314 How to Cite? |
Abstract | Background. Chronic pruritus is a common and distressing condition that has serious emotional and psychosocial consequences. Due to its subjective nature, self-report questionnaires are widely implemented as cost-effective measures to gauge the severity of chronic pruritus. The current study is aimed at validating the 5-D itch scale in three ethnic groups - Black, Asian, and Hispanic - with the well-validated Itch Numerical Rating Scale (NRS) and Worst Itch NRS (WI-NRS) and developing its cutoff value using receiver operating characteristics (ROC) and inspection of the area under the curve (AUC) across ethnic groups. At the same time, it is aimed at comparing the concurrent prevalence of itch and depression in these populations, who often form ethnic minorities in many countries. The current study addresses the knowledge gap of cultural adaptation of the 5-D pruritus scale for greater usage. Methods. Community samples of three ethnic groups were recruited from an online platform of Qualtrics and administered the self-report questionnaires of Itch-NRS, 5-D itch scale, and Patient Health Questionnaire-9 (PHQ-9) to measure their pruritus domains, itch intensity, depression screening, and its severity. Informed consent was obtained from all participants. Subgroup analysis was conducted, including concurrent validity and cutoff values compared between each ethnic group. Concurrent prevalence of itch and depression was evaluated using the cutoff value of Itch-NRS and PHQ-9. Result. A total of 2323 participants were included in the study. A significant positive correlation (p<0.001) was found between the Itch-NRS, WI-NRS, and 5-D itch scale. The cutoff value of the 5-D itch scale was established for the three ethnic groups using ROC, with a cutoff value of Itch-NRS as a reference. Conclusions. The 5-D itch scale has demonstrated sound psychometric properties in three ethnic groups and is closely related to Itch-NRS. The analysis of the cutoff value of the 5-D itch scale suggests that different cutoff values should be considered to reduce the inflation of pruritus severity. |
Persistent Identifier | http://hdl.handle.net/10722/324205 |
ISSN | 2023 Impact Factor: 2.6 2023 SCImago Journal Rankings: 0.656 |
PubMed Central ID | |
ISI Accession Number ID | |
Errata |
DC Field | Value | Language |
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dc.contributor.author | Cheung, H. N. | - |
dc.contributor.author | Chan, Y. S. | - |
dc.contributor.author | Hsiung, N. H. | - |
dc.date.accessioned | 2023-01-13T03:02:12Z | - |
dc.date.available | 2023-01-13T03:02:12Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | BioMed Research International, 2021, v. 2021, article no. 7640314 | - |
dc.identifier.issn | 2314-6133 | - |
dc.identifier.uri | http://hdl.handle.net/10722/324205 | - |
dc.description.abstract | Background. Chronic pruritus is a common and distressing condition that has serious emotional and psychosocial consequences. Due to its subjective nature, self-report questionnaires are widely implemented as cost-effective measures to gauge the severity of chronic pruritus. The current study is aimed at validating the 5-D itch scale in three ethnic groups - Black, Asian, and Hispanic - with the well-validated Itch Numerical Rating Scale (NRS) and Worst Itch NRS (WI-NRS) and developing its cutoff value using receiver operating characteristics (ROC) and inspection of the area under the curve (AUC) across ethnic groups. At the same time, it is aimed at comparing the concurrent prevalence of itch and depression in these populations, who often form ethnic minorities in many countries. The current study addresses the knowledge gap of cultural adaptation of the 5-D pruritus scale for greater usage. Methods. Community samples of three ethnic groups were recruited from an online platform of Qualtrics and administered the self-report questionnaires of Itch-NRS, 5-D itch scale, and Patient Health Questionnaire-9 (PHQ-9) to measure their pruritus domains, itch intensity, depression screening, and its severity. Informed consent was obtained from all participants. Subgroup analysis was conducted, including concurrent validity and cutoff values compared between each ethnic group. Concurrent prevalence of itch and depression was evaluated using the cutoff value of Itch-NRS and PHQ-9. Result. A total of 2323 participants were included in the study. A significant positive correlation (p<0.001) was found between the Itch-NRS, WI-NRS, and 5-D itch scale. The cutoff value of the 5-D itch scale was established for the three ethnic groups using ROC, with a cutoff value of Itch-NRS as a reference. Conclusions. The 5-D itch scale has demonstrated sound psychometric properties in three ethnic groups and is closely related to Itch-NRS. The analysis of the cutoff value of the 5-D itch scale suggests that different cutoff values should be considered to reduce the inflation of pruritus severity. | - |
dc.language | eng | - |
dc.relation.ispartof | BioMed Research International | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.title | Validation of the 5-D Itch Scale in Three Ethnic Groups and Exploring Optimal Cutoff Values Using the Itch Numerical Rating Scale | - |
dc.type | Article | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1155/2021/7640314 | - |
dc.identifier.pmid | 34938810 | - |
dc.identifier.pmcid | PMC8687834 | - |
dc.identifier.scopus | eid_2-s2.0-85122496496 | - |
dc.identifier.volume | 2021 | - |
dc.identifier.spage | article no. 7640314 | - |
dc.identifier.epage | article no. 7640314 | - |
dc.identifier.eissn | 2314-6141 | - |
dc.identifier.isi | WOS:001153274700007 | - |
dc.relation.erratum | doi:10.1155/2022/9759214 | - |
dc.relation.erratum | eid:eid_2-s2.0-85136168913 | - |