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      Dental vulnerability scale in primary health care: evidence of content and structure internal validity

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          Abstract

          Background

          Access to oral health services remains a challenge in the Brazilian healthcare system, especially in the primary health care setting, where the use of a risk stratification tool that could identify individuals with higher dental vulnerability would be extremely valuable. However, there literature on this theme is scarce, and there is no validated instrument in Brazil that is capable of measuring dental vulnerability. Hence, this psychometric study aimed at the development and evaluation of content and internal structure validity of the Dental Vulnerability Scale for Primary Health Care (PHC).

          Methods

          The items were developed based on a qualitative exploratory analysis. A total of 172 items were prepared and submitted to a panel of specialists, with content validity analyzed with the Content Validity Ratio (CVR), resulting in an the initial version of the instrument composed by 41 items. Internal structure validity was analyzed by Exploratory Factor Analysis (EFA), Confirmatory Factor Analysis (CFA), and by applying 3 reliability indicators (Cronbach’s Alpha, McDonald's Omega and Greatest Lower Bound – GBL), with a sample of 1227 individuals.

          Results

          The final configuration indicated a scale of 15 items divided into 4 dimensions (overall health, oral health, infrastructure, and healthcare services) with explained variance of 72.11%. The factor loads varied from 0.37 to 0.96. The model adjustment indices were set at × 2/df (51) = 3.23, NNFI = 0.95, CFI = 0.98, GFI = 0.96, AGFI = 0.97, RMSEA = 0.04 and RMSR = 0.03.

          Conclusion

          DVS presented satisfactory evidence of validity, indicating its suitability to be used by healthcare professionals, students and managers to plan oral health actions and services at PHC.

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          Most cited references53

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          Determination and Quantification Of Content Validity

          MARY LYNN (1986)
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            Uses and abuses of coefficient alpha.

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                Author and article information

                Contributors
                daniellepalacio@yahoo.com.br
                Journal
                BMC Oral Health
                BMC Oral Health
                BMC Oral Health
                BioMed Central (London )
                1472-6831
                28 August 2021
                28 August 2021
                2021
                : 21
                : 421
                Affiliations
                [1 ]GRID grid.413562.7, ISNI 0000 0001 0385 1941, CEPPAR, , Hospital Israelita Albert Einstein, ; Av. Albert Einstein 627, São Paulo, SP Brazil
                [2 ]GRID grid.411087.b, ISNI 0000 0001 0723 2494, Faculdade de Odontologia de Piracicaba, , Universidade Estadual de Campinas, ; Av. Limeira, 901 - Areião, Piracicaba, SP Brazil
                [3 ]GRID grid.11899.38, ISNI 0000 0004 1937 0722, Ciências e Humanidades – Rua Arlindo Béttio, , Universidade de São Paulo - Escola de Artes, ; 1000 - Ermelino Matarazzo, São Paulo, SP Brazil
                Author information
                http://orcid.org/0000-0003-4184-4464
                Article
                1742
                10.1186/s12903-021-01742-6
                8400751
                34454449
                ce113c33-2561-422d-a075-6ff7339d10e5
                © The Author(s) 2021

                Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver ( http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

                History
                : 4 December 2020
                : 12 July 2021
                Categories
                Research Article
                Custom metadata
                © The Author(s) 2021

                Dentistry
                oral health,dentistry,validity study,psychometry,health vulnerability,primary health care,questionnaire

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