Comparison of generic and specific instruments to assess the quality of life in patients with melasma

Abstract Objective To compare the psychometric performance of a generic and specific instruments in assessing melasma-related quality of life. Methods A cross-sectional study was conducted with 150 patients with melasma attending an outpatient dermatology clinic of a public hospital in São Paulo sta...

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Main Authors: Silmara Meneguin, Ioana Bitencourt Mourão, Camila Fernandes Pollo, Helio Amante Miot, Miriane Garuzi, Cesar de Oliveira
Format: Article
Language:English
Published: BMC 2022-04-01
Series:BMC Medical Research Methodology
Subjects:
Online Access:https://doi.org/10.1186/s12874-022-01599-5
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author Silmara Meneguin
Ioana Bitencourt Mourão
Camila Fernandes Pollo
Helio Amante Miot
Miriane Garuzi
Cesar de Oliveira
author_facet Silmara Meneguin
Ioana Bitencourt Mourão
Camila Fernandes Pollo
Helio Amante Miot
Miriane Garuzi
Cesar de Oliveira
author_sort Silmara Meneguin
collection DOAJ
description Abstract Objective To compare the psychometric performance of a generic and specific instruments in assessing melasma-related quality of life. Methods A cross-sectional study was conducted with 150 patients with melasma attending an outpatient dermatology clinic of a public hospital in São Paulo state, Brazil. Data were collected using a questionnaire containing sociodemographic and clinical data as well as the generic WHOQOL-BREF, and the dermatological-specific Skindex-16 and HRQ-Melasma. Results The overall internal consistency of the domains of the three instruments was ≥ 0.7. A strong positive correlation was identified between the Skindex-16 and HRQ-Melasma domains (0.68-0.78). Item-response theory showed that most Skindex-16 and HRQ-Melasma domains were more informative than WHOQOL-BREF. Conclusion The three instruments for assessing QOL tested presented good psychometric performance, with satisfactory internal consistency values. Only the two dermatological instruments, however, demonstrated a strong correlation between the domains that assess social, emotional, and functional aspects of QOL, indicating that both were able to identify impairments in other QOL dimensions in addition to the physical domain.
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spelling doaj.art-4537bcfd7a3f4c019a6795c985705cbb2022-12-22T02:21:16ZengBMCBMC Medical Research Methodology1471-22882022-04-012211810.1186/s12874-022-01599-5Comparison of generic and specific instruments to assess the quality of life in patients with melasmaSilmara Meneguin0Ioana Bitencourt Mourão1Camila Fernandes Pollo2Helio Amante Miot3Miriane Garuzi4Cesar de Oliveira5Nursing Department, Botucatu Medical School, São Paulo State University (Unesp)Department of Dermatology, Botucatu Medical School, São Paulo State University (Unesp)Nursing Department, Botucatu Medical School, São Paulo State University (Unesp)Department of Dermatology, Botucatu Medical School, São Paulo State University (Unesp)Department of Dermatology, Botucatu Medical School, São Paulo State University (Unesp)Department of Epidemiology & Public Health, University College LondonAbstract Objective To compare the psychometric performance of a generic and specific instruments in assessing melasma-related quality of life. Methods A cross-sectional study was conducted with 150 patients with melasma attending an outpatient dermatology clinic of a public hospital in São Paulo state, Brazil. Data were collected using a questionnaire containing sociodemographic and clinical data as well as the generic WHOQOL-BREF, and the dermatological-specific Skindex-16 and HRQ-Melasma. Results The overall internal consistency of the domains of the three instruments was ≥ 0.7. A strong positive correlation was identified between the Skindex-16 and HRQ-Melasma domains (0.68-0.78). Item-response theory showed that most Skindex-16 and HRQ-Melasma domains were more informative than WHOQOL-BREF. Conclusion The three instruments for assessing QOL tested presented good psychometric performance, with satisfactory internal consistency values. Only the two dermatological instruments, however, demonstrated a strong correlation between the domains that assess social, emotional, and functional aspects of QOL, indicating that both were able to identify impairments in other QOL dimensions in addition to the physical domain.https://doi.org/10.1186/s12874-022-01599-5MelasmaQuality of lifePsychometryQuestionnaire
spellingShingle Silmara Meneguin
Ioana Bitencourt Mourão
Camila Fernandes Pollo
Helio Amante Miot
Miriane Garuzi
Cesar de Oliveira
Comparison of generic and specific instruments to assess the quality of life in patients with melasma
BMC Medical Research Methodology
Melasma
Quality of life
Psychometry
Questionnaire
title Comparison of generic and specific instruments to assess the quality of life in patients with melasma
title_full Comparison of generic and specific instruments to assess the quality of life in patients with melasma
title_fullStr Comparison of generic and specific instruments to assess the quality of life in patients with melasma
title_full_unstemmed Comparison of generic and specific instruments to assess the quality of life in patients with melasma
title_short Comparison of generic and specific instruments to assess the quality of life in patients with melasma
title_sort comparison of generic and specific instruments to assess the quality of life in patients with melasma
topic Melasma
Quality of life
Psychometry
Questionnaire
url https://doi.org/10.1186/s12874-022-01599-5
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