Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T16:14:43Z No. of bitstreams: 5 license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) marcio.pdf: 2392777 bytes, checksum: daf29ad1dd5db2fd4e6522c5344543dc (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T10:52:21Z (GMT) No. of bitstreams: 5 license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) marcio.pdf: 2392777 bytes, checksum: daf29ad1dd5db2fd4e6522c5344543dc (MD5) / Made available in DSpace on 2015-02-10T10:52:21Z (GMT). No. of bitstreams: 5 license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) marcio.pdf: 2392777 bytes, checksum: daf29ad1dd5db2fd4e6522c5344543dc (MD5) Previous issue date: 2013 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Objetivo: Desenvolver e validar um instrumento espec?fico para a avalia??o do impacto das m?s oclus?es na qualidade de vida, o Malocclusion Impact Scale for Early Childhood (MIS-EC), por meio do relato dos pais ou cuidadores de crian?as pr?-escolares. M?todos: A elabora??o do instrumento MIS-EC foi dividida em duas etapas: desenvolvimento e valida??o. Na etapa de desenvolvimento, 15 pesquisadores, 30 pais/cuidadores de crian?as com m? oclus?o e 30 pais/cuidadores de crian?as sem m? oclus?o avaliaram a relev?ncia de cada quest?o de um conjunto de 22 itens pr?-selecionados. A partir dos escores padronizados, as quest?es mais relevantes foram inclu?das no instrumento final. O MIS-EC foi, ent?o, aplicado a uma mostra de 230 pais para avaliar a validade discriminante (regress?o de Poisson), validade convergente (correla??o de Spearman) e a consist?ncia interna do instrumento (atrav?s do ?ndice Alpha de Cronbach). A an?lise de confiabilidade teste-reteste foi realizada em uma amostra de 20 pais usando o kappa ponderado para as vari?veis ordinais e o coeficiente de correla??o intraclasse (CCI) para os escores das se??es (crian?a e fam?lia) e o escore total do instrumento. Resultados: Os escores do MIS-EC (total e das se??es da crian?a e da fam?lia) apresentaram signific?ncia estat?stica com a avalia??o da sa?de bucal global e o bem-estar geral da crian?a. Crian?as com m? oclus?o apresentaram 5,68 vezes maior preval?ncia de MIS-EC ? 1 do que crian?as sem m? oclus?o, independentemente da presen?a de c?rie dent?ria e traumatismo. Os valores de Alpha de Cronbach para o escore total, impacto da crian?a e impacto da fam?lia do MIS-EC, foi de 0,85; 0,82 e 0,51, respectivamente. O coeficiente de correla??o intraclasse (ICC) para a confiabilidade do teste-reteste foi de 0,97. Conclus?o: O MIS-EC foi v?lido e confi?vel para a avalia??o do impacto das m?s oclus?es na qualidade de vida de crian?as pr?-escolares e suas fam?lias. Entretanto, s?o necess?rios mais estudos, realizados em outras popula??es, para o melhor estabelecimento das caracter?sticas t?cnicas do instrumento. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Odontologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2013. / ABSTRACT Objective: To develop and assess the validity of a specific instrument to measure the impact of malocclusions on OHRQoL, the Malocclusion Impact Scale for Early Childhood (MIS-EC), trough the report of parents or caregivers of preschool children. Methods: The elaboration of MIS-EC was split in two stages: development and testing. In the development stage fifteen researchers, thirty parents/caregivers of children with malocclusion and thirty parents/caregivers of children without malocclusion evaluated the relevance of each question from a from a pool of 22 pre-selected items. To identify the most important questions for the composition of the final instrument, the standardized scores were obtained for each item. The MIS-EC was then administered to a sample of 230 parents to evaluate the discriminant validity (Poisson regression), convergent validity (Spearman?s correlation) and internal consistency (using Cronbach?s alpha). The analysis of test-retest reliability was performed on a sample of 20 parents using the weighted kappa for ordinal variables, and intraclass correlation coefficient (ICC) for scores of sections (child and family) and for the total score of the MIS-EC. Results: MIS-EC scores (total score, child?s section score and family?s section score) were statistically significant in assessing the child?s overall oral health and general well-being. Children with malocclusion had 5.68 times higher prevalence of MIS-EC ? 1 than children without malocclusion, regardless of the presence of dental caries and dental trauma. Cronbach's alphas for the total MIS-EC score, the child and family sections were respectively 0.85, 0.82 and 0.51. The intraclass correlation coefficient (ICC) for test-retest reliability was 0.97. Conclusions: The MIS-EC performed well in assessing malocclusions? impacts on OHRQoL among children and their families. Studies in other populations are needed to further establish the instrument's technical properties.