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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

A realist review of evidence to guide targeted approaches to HIV/AIDS prevention among immigrants living in high-income countries

McMahon, Tadgh, mcmaht@email.cs.nsw.gov.au January 2010 (has links)
Abstract HIV/AIDS is a global epidemic with the greatest burden in terms of prevalence, morbidity and mortality in sub-Saharan Africa, parts of Asia and, more recently, the Caribbean. Immigrants from these regions of birth now make up a significant proportion of people living with HIV in many high-income countries, including Australia. The higher priority accorded to people from culturally and linguistically diverse (CALD) backgrounds in Australian national and local HIV/AIDS strategies generates a broad question on ‘how’ to implement HIV prevention interventions with immigrants to address what are often atypical modes of HIV transmission and observed disparities in areas such as later presentation with HIV. HIV prevention in Australia has included whole-of-population approaches alongside targeted approaches, which address HIV prevention with specific groups – usually those disproportionately affected by HIV/AIDS such as gay men or injecting drug users. Targeted health promotion interventions for immigrants have also formed part of the HIV response in Australia. Immigrants in Australia may have acquired HIV prior to their first arrival in Australia, on subsequent travel abroad, or within Australia. A key gap in our evidence base in Australia includes what we can learn from interventions implemented in other high-income countries to guide new, or strengthen existing, approaches to culturally appropriate primary and secondary HIV prevention with immigrants locally. Typically it is taken as a given that prevention interventions will be more effective if they are culturally appropriate to the population they serve, and a range of strategies and activities are used to achieve this. However, there is rarely an examination of what mechanisms – the ‘change elements’ or program theories of the intervention – contribute to culturally appropriate interventions. This research, in the form of a realist review of evidence, sought to ‘unpack’ the mechanisms for achieving cultural appropriateness in HIV prevention interventions with immigrants that have been implemented in contexts similar to Australia. Thus the broad question the research sought to answer was ‘How and why do interventions work (or not), for which groups of immigrants, and in what contexts?’ The review of evidence in HIV prevention included a span of interventions from community-level approaches using mass media through to interventions delivered at a group level to immigrants. Systematic searches were carried out on major public health databases (PubMed, CINAHL, Sociological Abstracts, PsychInfo) and Google Scholar to find peer-reviewed and grey literature relevant to HIV prevention among immigrants. Two types of studies contributed to the review of evidence – studies of interventions and qualitative studies of immigrants’ views on HIV/AIDS prevention – in order to bring together ‘expert’ and ‘lay’ understandings of HIV prevention among immigrants. Simultaneously, a scan of the literature mapped preliminary mechanisms contributing to cultural appropriateness in HIV prevention interventions with immigrants. This preliminary set of seven mechanisms – ‘authenticity’, ‘understanding’, ‘consonance’, ‘specificity’, ‘embeddedness’, ’endorsement’ and ‘framing’ – were theorised as the key, rather than the only, interrelated mechanisms contributing to cultural appropriateness in interventions with immigrants. These preliminary mechanisms were then tested, revised and refined against evidence – 74 ‘grey’ and peer-reviewed studies and reports relevant to HIV prevention with immigrants – found in systematic searches. The evidence indicates that the pivotal mechanisms contributing to cultural appropriateness in HIV prevention interventions with immigrants are ‘understanding’ and ‘consonance’ – ensuring that language (usually the ‘mother tongue’) and cultural values are included as key elements in the development and implementation of the intervention. ‘Authenticity’, ‘specificity’ and ‘embeddedness’were moderately important in contributing to cultural appropriateness – mechanisms that dealt with staffing, targeting through ethnicity and using settings for interventions – from the evidence included in the review. Finally, there was mixed evidence for the roles of ‘endorsement’ and ‘framing’, which suggests that gaining community endorsement or partnering initiatives with immigrants or immigrant community institutions were the least critical mechanisms in contributing to cultural appropriateness in terms of HIV prevention interventions. Further research is needed to examine the relationships between these seven mechanisms and any impacts they contribute to the effectiveness of interventions and HIV-related health outcomes among immigrants.
2

AS RESTAURAÇÕES DE CIMENTO DE IONÔMERO DE VIDRO EM LESÕES CERVICAIS SÃO MAIS DURADOURAS DO QUE AS RESTAURAÇÕES À BASE DE RESINA COMPOSTA? REVISÃO SISTEMÁTICA E META ANÁLISE

Boing, Thaynara Faelly 26 April 2017 (has links)
Made available in DSpace on 2017-07-24T19:22:05Z (GMT). No. of bitstreams: 1 THAYNARA BOING.pdf: 2103458 bytes, checksum: e706074b69bce3f72ba788d2a4560bc1 (MD5) Previous issue date: 2017-04-26 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The aim of this systematic review was to compare the clinical effectiveness of non-carious cervical restorations with glass ionomer cement /resin-modified glass ionomer cement (GIC/RMGIC) or composite resin (CR). The following factors were analyzed: retention rates, color, surface texture, marginal adaptation, marginal discoloration and secondary caries. Methods:According to the PRISMA guidelines, systematic review was undertaken using a selection process in two phases, different references were identified and articles were included for qualitative analysis and were included in a meta-analysis. The authors searched the following electronic database: Cochrane, Lilacs, BBO, Pubmed, Scopus and Web Of Science. Additional search of grey literature was performed. Were also searched the abstracts from the IADR (1990-2015), ongoing trials in trials registries, the CAPES database for theses and the ProQuest database for theses and dissertations. We included only randomized clinical trials. Quality of the evidence for each outcome was assessed using the GRADE tool. Results: A total of 1530 articles were identified, but only 19 articles from 15 studies remained for analysis, which were all judged at “unclear” risk of bias. Ten of the 15 studies evaluated resin-modifed glass ionomer cements, (GIC/RMGIC) that showed higher retention rates in all follow-ups (1 to 3 years; p < 0.0001 and at 5 years; p< 0.00001). No difference was observed for marginal discoloration, marginal adaptation and secondary caries in all followups (p > 0.05). CR showed better color match than GIC/RMGIC only at 2 years (p = 0.03). Higher surface texture was observed in GIC/RMGIC in all follow-ups (at 1 year p= 0.0003; at 3 years p = 0.0004). Quality of evidence was graded as moderate or low due to the unclear risk of bias and imprecision in some outcomes. Conclusions: The retention rates of GIC/RMGIC were superior to composite resins in all study follow-ups, but a higher surface texture was observed in the GIC/RMGIC compared to CR. / Comparar a efetividade clínica de restaurações cervicais não cariosas com cimento de ionômero de vidro / cimento de ionômero de vidro modificado por resina (CIV/CIVMR) ou à base de resina composta (RC). Por meio de revisão sistemática da literatura, os seguintes fatores foram analisados: taxas de retenção, cor, textura de superfície, adaptação marginal, descoloração marginal e cárie secundária. Métodos: De acordo com a orientação do PRISMA, a revisão sistemática foi realizada utilizando um processo de seleção em duas fases, identificaram-se diferentes referências e os artigos foram incluídos para uma análise qualitativa e posteriormente meta– análises. Os autores pesquisaram nas seguintes bases de dados: Cochrane, Lilacs e BBO, Pubmed, Scopus e Web Of Science. Uma pesquisa adicional na literatura cinzenta foi realizada. Foram pesquisados também os resumos do IADR (1990-2015), os ensaios em andamento nos registros de ensaios clínicos, as bases de dados CAPES e ProQuest para teses e dissertações. Foram incluídos apenas ensaios clínicos randomizados. A qualidade da evidência para cada resultado foi avaliada usando a ferramenta GRADE. Resultados: Foram identificados 1530 artigos, mas apenas 19 artigos de 15 estudos (4 de acompanhamento de estudos anteriores) permaneceram para análise, os quais foram todos julgados com risco de viés "moderado". Dez dos 15 estudos avaliaram CIVMR. Os CIV/CIVMR apresentaram maiores taxas de retenção em todos os seguimentos (1 a 3 anos, p <0,0001 e 5 anos, p <0,00001). Não houve diferença para descoloração marginal, adaptação marginal e cárie secundária em todos os seguimentos (p> 0,05). A RC mostrou melhor estabilidade de cor do que CIV/CIVMR apenas aos 2 anos (p = 0,03). Observou-se maior rugosidade no CIV/CIVMR em todos os acompanhamentos (1 ano p = 0,0003, aos 3 anos p = 0,0004). A qualidade da evidência foi classificada como moderada ou baixa, devido ao risco indefinido de viés e imprecisão em alguns resultados. Conclusões: As taxas de retenção de CIV/CIVMR foram superiores às resinas compostas em todos os acompanhamentos do estudo, mas observou-se maior textura superficial nesses CIV/CIVMR em relação às RCs.

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