1
|
Nii D, Espósito AC, Peres G, Schmitt JV, Miot H. Tinted sunscreens lead to a smaller amount of the product applied on the face. Int J Dermatol 2020; 59:e438-e439. [PMID: 32808298 DOI: 10.1111/ijd.15151] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/29/2020] [Accepted: 07/29/2020] [Indexed: 11/28/2022]
Affiliation(s)
- Diana Nii
- Departamento de Dermatologia e Radioterapia, UNESP, Botucatu, SP, Brazil
| | - Ana C Espósito
- Departamento de Dermatologia e Radioterapia, UNESP, Botucatu, SP, Brazil
| | - Gabriel Peres
- Departamento de Dermatologia e Radioterapia, UNESP, Botucatu, SP, Brazil
| | - Juliano V Schmitt
- Departamento de Dermatologia e Radioterapia, UNESP, Botucatu, SP, Brazil
| | - Helio Miot
- Departamento de Dermatologia e Radioterapia, UNESP, Botucatu, SP, Brazil
| |
Collapse
|
2
|
Jorge MFS, Sousa TD, Pollo CF, Paiva BSR, Ianhez M, Boza JC, Meneguin S, Schmitt JV, Nunes DH, Lastoria JC, Miot HA. Dimensionality and psychometric analysis of DLQI in a Brazilian population. Health Qual Life Outcomes 2020; 18:268. [PMID: 32758227 PMCID: PMC7409396 DOI: 10.1186/s12955-020-01523-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 07/30/2020] [Indexed: 12/13/2022] Open
Abstract
Background The Dermatology Life Quality Index (DLQI) is the most commonly used instrument for clinical evaluation of the impact on health-related quality of life (HRQOL) in dermatological research protocols. The DLQI’s classical psychometric properties have been considered adequate in validation studies from several countries. However, the structure of the DLQI is a matter of discussion, especially concerning the dimensionality and informative properties of its questions according to the item response theory (IRT). Methods Pooled data from studies in Brazil that utilized the DLQI to assess HRQOL in 14 dermatoses were reanalyzed. Classical psychometrical analysis, dimensionality assessment through parallel analysis and IRT (Samejima’s ordinal model) analysis were performed. Results The sample consisted of 1286 patients with a mean age of 47 years (SD = 16), and the proportion of women was 59% (765). The DLQI scores ranged from 0 to 29, with a median (p25–p75) of 5 (2–11). All items indicated significant correlations with the total DLQI score (rho > 0.54). The Cronbach’s alpha result was 0.90 (CI 95% 0.89–0.91). Parallel analysis indicated a unidimensional factor structure. According to IRT analysis, items q6 (sports) and q7 (work/study) exhibited insufficient fit to the model (p < 0.01), while the items that indicated the best discrimination and information functions were q2 (embarrassment), q3 (shopping/gardening), q4 (clothing) and q5 (social/leisure). The ordination of the scores was confirmed for all items. Most items revealed non-uniform behavior according to sex, age and type of disease. Conclusions The DLQI exhibits adequate psychometric reliability and a unidimensional structure for assessing HRQOL in Brazilian dermatological patients. The DLQI’s performance varies in the assessment of HRQOL in heterogeneous samples.
Collapse
Affiliation(s)
- Marilia F S Jorge
- Departamento de Dermatologia da Faculdade de Medicina da Unesp, Unesp Medical School, Campus Universitário de Rubião Jr, Botucatu, SP, 18618-000, Brazil.
| | - Ticiane D Sousa
- Departamento de Enfermagem, Unesp Medical School, Botucatu, SP, Brazil, Campus Universitário de Rubião Jr, Botucatu, SP, 18618-000, Brazil
| | - Camila F Pollo
- Departamento de Enfermagem, Unesp Medical School, Botucatu, SP, Brazil, Campus Universitário de Rubião Jr, Botucatu, SP, 18618-000, Brazil
| | - Bianca S R Paiva
- Health-Related Quality of Life Research Group (GPQual), Learning and Research Institute - Barretos Cancer Hospital, Barretos, SP, 14784-40, Brazil
| | - Mayra Ianhez
- Departamento de Dermatologia, Universidade Federal de Goiás (UFGO), Av. Esperança, s/n - Chácaras de Recreio Samambaia, Goiânia, GO, 74690-900, Brazil
| | - Juliana C Boza
- Departamento de Dermatologia, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Paulo Gama, 110 - Farroupilha, Porto Alegre, RS, 90040-060, Brazil
| | - Silmara Meneguin
- Departamento de Enfermagem, Unesp Medical School, Botucatu, SP, Brazil, Campus Universitário de Rubião Jr, Botucatu, SP, 18618-000, Brazil
| | - Juliano V Schmitt
- Departamento de Dermatologia da Faculdade de Medicina da Unesp, Unesp Medical School, Campus Universitário de Rubião Jr, Botucatu, SP, 18618-000, Brazil
| | - Daniel Holthausen Nunes
- Disciplina de Dermatologia, Universidade Federal de Santa Catarina (UFSC), R. Eng. Agronômico Andrei Cristian Ferreira, s/n - Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Joel C Lastoria
- Departamento de Dermatologia da Faculdade de Medicina da Unesp, Unesp Medical School, Campus Universitário de Rubião Jr, Botucatu, SP, 18618-000, Brazil
| | - Hélio A Miot
- Departamento de Dermatologia da Faculdade de Medicina da Unesp, Unesp Medical School, Campus Universitário de Rubião Jr, Botucatu, SP, 18618-000, Brazil
| |
Collapse
|
3
|
Affiliation(s)
- Mayra Ianhez
- Department of Dermatology, Universidade Federal de Goiás (UFG), Goiânia, Brazil
| | - Juliano V Schmitt
- Department of Dermatology, Universidade Estadual Paulista Júlio Mesquita Filho (UNESP), Botucatu, Brazil
| | - Helio A Miot
- Department of Dermatology, Universidade Estadual Paulista Júlio Mesquita Filho (UNESP), Botucatu, Brazil
| |
Collapse
|
4
|
Brianezi G, Handel AC, Schmitt JV, Miot LDB, Miot HA. Changes in nuclear morphology and chromatin texture of basal keratinocytes in melasma. J Eur Acad Dermatol Venereol 2014; 29:809-12. [PMID: 24629163 DOI: 10.1111/jdv.12453] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Accepted: 02/12/2014] [Indexed: 11/28/2022]
Abstract
BACKGROUND The pathogenesis of melasma and the role of keratinocytes in disease development and maintenance are not completely understood. Dermal abnormalities, the expression of inflammatory mediators, growth factors, epithelial expression of melanocortin and sexual hormones receptors suggest that not only melanocytes, but entire epidermal melanin unit is involved in melasma physiopathology. OBJECTIVES To compare nuclear morphological features and chromatin texture between basal keratinocytes in facial melasma and adjacent normal skin. METHODS We took facial skin biopsies (2 mm melasma and adjacent normal skin) from women processed for haematoxylin and eosin. Thirty non-overlapping basal keratinocyte nuclei were segmented and descriptors of area, highest diameter, perimeter, circularity, pixel intensity, profilometric index (Ra) and fractal dimension were extracted using ImageJ software. RESULTS Basal keratinocyte nuclei from facial melasma epidermis displayed larger size, irregular shape, hyperpigmentation and chromatin heterogeneity by fractal dimension than perilesional skin. CONCLUSION Basal keratinocytes from facial melasma display changes in nuclear form and chromatin texture, suggesting that the phenotype differences between melasma and adjacent facial skin can result from complete epidermal melanin unit alterations, not just hypertrophic melanocytes.
Collapse
Affiliation(s)
- G Brianezi
- Departamento de Patologia (TOXICAM), FMB-Unesp, Botucatu, SP, Brazil
| | | | | | | | | |
Collapse
|