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Relationship between breastfeeding duration and prevalence of posterior crossbite in the deciduous dentition

KOBAYASHI, Henri Menezes; SCAVONE JR., Helio; FERREIRA, Rivea Ines; GARIB, Daniela Gamba
Fonte: MOSBY-ELSEVIER Publicador: MOSBY-ELSEVIER
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
35.92%
Introduction: This cross-sectional retrospective epidemiologic study assessed the relationship between exclusive breastfeeding duration and the prevalence of posterior crossbite in the deciduous dentition. Methods: Clinical examinations were performed in 1377 Brazilian children (690 boys, 687 girls), 3 to 6 years old, from 11 public schools in Sao Paulo, Brazil. Based on questionnaires answered by the parents, the children were classified into 4 groups according to the duration of exclusive breastfeeding: G1, never (119 subjects); G2, less than 6 months (720 subjects); G3, 6 to 12 months (312 subjects); and G4, more than 12 months (226 subjects). The statistical analyses included the chi-square test (P < 0.05) and the odds ratio. Results: The posterior crossbite was observed in 31.1%, 22.4%, 8.3%, and 2.2% of the children, in groups G1, G2, G3, and G4, respectively. The results showed a statistically significant relationship between exclusive breastfeeding duration and the prevalence of posterior crossbite. Conclusions: Children who were breastfed for more than 12 months had a 20-fold lower risk for the development of posterior crossbite compared with children who were never breastfed and a 5-fold lower risk compared with those breastfed between 6 and 12 months. (Am J Orthod Dentofacial Orthop 2010; 137:54-8)

Razão de chance de ocorrência de dor, variáveis posturais e disfunção em violinistas na cidade de São Paulo; Odds ratio of occurrence of pain, postural changes, and disabilities of violinists in São Paulo

Santos, Fabiola Carvalho Lopes dos
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 17/05/2012 Português
Relevância na Pesquisa
46%
A relação entre músicos e dores musculoesqueléticas é cada vez mais comum em centro de estudos musicais, tais como, universidades e orquestras. O objetivo desta dissertação foi analisar a razão de chance de ocorrência de dor, variáveis posturais e disfunção em violinistas na cidade de São Paulo. Foram avaliados 38 violinistas com idade de 21.5 ± 4.7 anos. A análise postural foi realizada por meio de fotogrametria com auxílio do software SAPO v.0.63 e de marcadores previamente colocados em referências ósseas, observadas nos planos frontais (anterior e posterior) e sagitais. A avaliação da dor foi realizada por meio da Escala Visual Analógica de Dor (EVA), questionário McGill e a disfunção musculoesquelética pelo questionário DASH. Para o cálculo da probabilidade de ter dor durante o estudo com o violino foi realizado um modelo de regressão logística onde todas as variáveis (posturais, idade, horas de prática e tempo de prática-anos) foram consideradas. Os resultados obtidos para o índice EVA e DASH foram analisados utilizando-se a técnica multivariada k-médias, sendo que as variáveis importantes para discriminação dos grupos em relação à EVA foram a postura da cabeça, a postura do ombro e a cifose torácica e para o índice DASH o desvio lateral da coluna e a inclinação da cabeça. Este estudo encontrou uma relação entre dor...

Associações das concentrações séricas de ácido úrico com as variáveis dietéticas, antropométricas e bioquímicas de adultos clinicamente selecionados para programa de mudança de estilo de vida

Oliveira, Erick Prado de
Fonte: Universidade Estadual Paulista (UNESP) Publicador: Universidade Estadual Paulista (UNESP)
Tipo: Dissertação de Mestrado Formato: 47 f.
Português
Relevância na Pesquisa
26.09%
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Pós-graduação em Patologia - FMB; Verificar quais os principais fatores associados com os maiores valores de uricemia, analisando a dieta, composição corporal e marcadores bioquímicos. Foram estudados 1075 indivíduos, de ambos os sexos, com idade entre 21 e 82 anos, participantes de projeto de mudança de estilo de vida. Ácido úrico, glicose, triglicerídios, colesterol total, uréia, creatinina, gama-GT, albumina e cálcio e HDL-c foram quantificados no soro pelo método de química seca. LDL-c foi calculado pela fórmula de Friedewald. Glóbulos brancos, linfócitos e leucócitos foram quantificados por automação. Proteína C-reativa ultra-sensível (PCR-US) pelo método de imunoquimioluminecência. A avaliação antropométrica foi composta pelas medidas de peso e estatura, com posterior cálculo do IMC. Também mediu-se a circunferência abdominal. Massa muscular e % de gordura pela bioimpedância. A ingestão dietética foi realizada através do recordatório de 24 horas, com posterior cálculo das porções da pirâmide e IAS adaptado. Os testes foram realizados utilizando o programa SAS versão 9.1 e o STATISTICA 6.0 e descritos em média + DP. Foi realizado o teste de ANOVA one-way. A nomalidade da amostra foi avaliada pelo teste de Shapiro-Wilk. Correlação de Pearson simples e parcial. Regressão linear (odds ratio)...

Lacrimal secretory IgA in active posterior uveitis induced by Toxoplasma gondii

Lynch,Maria Isabel; Cordeiro,Francisco; Ferreira,Silvana; Ximenes,Ricardo; Oréfice,Fernando; Malagueño,Elizabeth
Fonte: Instituto Oswaldo Cruz, Ministério da Saúde Publicador: Instituto Oswaldo Cruz, Ministério da Saúde
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2004 Português
Relevância na Pesquisa
35.82%
It is quite difficult to diagnose active toxoplasmosis in patients with ocular toxoplasmosis. Active posterior uveitis presumably due to Toxoplasma gondii infection (APUPT) is seldom produced during a prime-infection; hence most patients do not show high IgM antibodies. High levels of IgA have been described in active toxoplasmosis. The purpose of this study was to investigate possible association between APUPT and the specific anti-parasite sIgA in tears. The study was carried out as case-control. Tears of 25 clinically confirmed APUPT patients and 50 healthy control subjects were analyzed. All were IgG seropositive. Specific sIgA was determined by ELISA assay using T. gondii RH strain crude extract. Anti-T. gondii sIgA was found in 84% of the cases and in 22% of the control subjects. The intensity of the reaction was higher in APUPT cases (P = 0.007). There was strong association between APUPT patients and lacrimal sIgA (odds-ratio 18.61, P = 0.0001). ELISA test sensitivity was 84% and specificity 78% . Our data suggest that anti-T.gondii secretory IgA found in tears may become an important marker for active ocular toxoplasmosis.

Salud oral y déficit nutricional en adultos mayores no institucionalizados en Londrina, Paraná, Brasil

Mesas,Arthur Eumann; Andrade,Selma Maffei de; Cabrera,Marcos Aparecido Sarria; Bueno,Vera Lúcia Ribeiro de Carvalho
Fonte: Associação Brasileira de Saúde Coletiva Publicador: Associação Brasileira de Saúde Coletiva
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2010 Português
Relevância na Pesquisa
35.82%
OBJETIVO: Examinar la asociación entre el déficit nutricional y problemas de salud oral en adultos mayores no institucionalizados de una comunidad en Brasil. MÉTODOS: En este estudio transversal fueron obtenidos datos de 267 adultos mayores (160 mujeres y 107 hombres) con edad entre los 60 y 74 años provenientes del censo del área de cobertura de un Equipo del Programa Salud de la Familia de Londrina, Brasil. El déficit nutricional fue identificado con la Mini Evaluación Nutricional (< 24 puntos). La valoración odontológica incluyó exploración bucodental, medición del flujo salivar estimulado y aplicación del Geriatric Oral Health Assessment Index para la percepción oral. Los análisis multivariantes fueron ajustados por variables sociodemográficas, depresión y consumo de medicamentos. RESULTADOS: El déficit nutricional fue detectado en 58 ancianos (21,7%). Entre las variables odontológicas, la ausencia de oclusión posterior (Odds Ratio, OR: 2,18; Intervalo de Confianza, IC95%: 1,06 - 4,45), el flujo salivar estimulado < 0,7 ml/minuto (OR: 2,18, IC95%: 1,06 - 4,50), la enfermedad periodontal avanzada (OR: 6,54; IC95%: 2,03 -21,00) y la percepción negativa de la salud oral (OR: 3,41; IC95%: 1,59 - 7,33) se asociaron al déficit nutricional de modo independiente del sexo...

Endothelin-1 Attenuates the Hemodynamic Response to Exogenous Epinephrine in a Porcine Ischemic Ventricular Fibrillation Cardiac Arrest Model

Shah, Atman P.; Youngquist, Scott T.; McClung, Christian D.; Thomas, Joseph L.; Tzvetkova, Ekaterina; Hanif, Mohammed A.; Rosborough, John P.; Niemann, James T.
Fonte: Mary Ann Liebert, Inc. Publicador: Mary Ann Liebert, Inc.
Tipo: Artigo de Revista Científica
Publicado em /09/2011 Português
Relevância na Pesquisa
35.72%
Endothelin-1 (ET-1) increases in the ischemically induced ventricular fibrillation (VF) swine model of cardiac arrest and affects outcome by potentially attenuating the hemodynamic response to epinephrine. Fifty-one swine underwent percutaneous left anterior descending occlusion. Seven minutes postonset of ischemic VF, cardiopulmonary resuscitation (CPR) was initiated. If VF persisted after 3 shocks, 1 mg of epinephrine was given. ET-1 (collected at baseline and every 5 min until VF onset) was assayed with ELISA. Bayesian multivariate logistic regression analysis compared peak ET-1 levels with the binary outcome of a positive coronary perfusion pressure response of >20 mmHg following epinephrine. Sixteen animals (31%) failed to achieve a positive response. Restoration of spontaneous circulation (ROSC) was observed in 1/16 (6.3%) of epinephrine nonresponders and 20/35 (57.1%) of epinephrine responders (P=0.0006). The median peak ET-1 level was 2.71 pg/mL [interquartile range (IQR) 1.06–4.40] in nonresponders and 1.69 pg/mL (IQR 0.99–2.35) in responders. ET-1 levels were inversely associated with epinephrine response with a median posterior odds ratio (OR) of a coronary perfusion pressure response of 0.72 (95% confidence interval [CI] 0.48–1.06) for each one-unit increase in ET-1 and a probability that the associated OR is <1 of 0.95. Peak ET-1 levels predict a lack of a hemodynamic response to epinephrine during treatment of cardiac arrest during ischemic VF.

Long-Term Echocardiographic Follow-up after Posterior Mitral Annuloplasty Using a Vascular Strip for Ischemic Mitral Regurgitation: Ten-Years of Experience at a Single Center

Jeong, Dong Seop; Lee, Hae Young; Kim, Wook Sung; Sung, Kiick; Jun, Tae-Gook; Yang, Ji-Hyuk; Park, Pyo Won; Lee, Young Tak
Fonte: The Korean Academy of Medical Sciences Publicador: The Korean Academy of Medical Sciences
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
35.72%
Management of ischemic mitral regurgitation (MR) is challenging. The aim of this study was to investigate long-term clinical and echocardiographic results of restrictive mitral annuloplasty for ischemic MR. From 2001 through 2010, 96 patients who underwent myocardial revascularization with restrictive mitral annuloplasty using a vascular strip for ischemic MR were analyzed. Patients were stratified into two groups based on left ventricular ejection fraction (LVEF): group I, n = 50, with LVEF > 35% and group II, n = 46, with LVEF ≤ 35%. The early mortality rate was 2.1% (2/96) and the late cardiac mortality rate was 11.5% (11/96). MR grade was reduced at discharge (0.8 ± 0.7) but increased during follow-up (1.1 ± 0.8, P = 0.001). There was no intergroup difference in terms of freedom from recurrent MR ≥ moderate eight years after surgery (94.1% ± 5.7%, group I vs 87.8% ± 7.2%, group II; P = 0.575). NYHA functional class (odds ratio [OR], 2.2; P = 0.044) and early postoperative residual MR ≥ mild (OR, 25.4; P < 0.001) were independent predictors of recurrent MR. Restrictive mitral annuloplasty using a vascular strip is effective in ischemic MR. It is important to avoid early postoperative residual MR.

Bayesian Posterior Distributions Without Markov Chains

Cole, Stephen R.; Chu, Haitao; Greenland, Sander; Hamra, Ghassan; Richardson, David B.
Fonte: Oxford University Press Publicador: Oxford University Press
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
35.87%
Bayesian posterior parameter distributions are often simulated using Markov chain Monte Carlo (MCMC) methods. However, MCMC methods are not always necessary and do not help the uninitiated understand Bayesian inference. As a bridge to understanding Bayesian inference, the authors illustrate a transparent rejection sampling method. In example 1, they illustrate rejection sampling using 36 cases and 198 controls from a case-control study (1976–1983) assessing the relation between residential exposure to magnetic fields and the development of childhood cancer. Results from rejection sampling (odds ratio (OR) = 1.69, 95% posterior interval (PI): 0.57, 5.00) were similar to MCMC results (OR = 1.69, 95% PI: 0.58, 4.95) and approximations from data-augmentation priors (OR = 1.74, 95% PI: 0.60, 5.06). In example 2, the authors apply rejection sampling to a cohort study of 315 human immunodeficiency virus seroconverters (1984–1998) to assess the relation between viral load after infection and 5-year incidence of acquired immunodeficiency syndrome, adjusting for (continuous) age at seroconversion and race. In this more complex example, rejection sampling required a notably longer run time than MCMC sampling but remained feasible and again yielded similar results. The transparency of the proposed approach comes at a price of being less broadly applicable than MCMC.

Does posterior pericardiotomy reduce the incidence of atrial fibrillation after coronary artery bypass grafting surgery?

Kaleda, Vasily I.; McCormack, David J.; Shipolini, Alex R.
Fonte: Oxford University Press Publicador: Oxford University Press
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
35.82%
A best evidence topic in cardiac surgery was written according to a structured protocol. The question addressed was whether posterior pericardiotomy (PP) reduces the incidence of atrial fibrillation (AF) after coronary artery bypass grafting surgery. Twelve papers were found using the reported search, of which seven represented the best evidence to answer the clinical question. The authors, journal, date and country of publication, patient group studied, study type, relevant outcomes and results of these papers were tabulated. One non-randomized prospective cohort controlled study generated early evidence that PP reduced the rate of postoperative AF and pericardial effusion. The operative details of PP were clearly explained in this paper. The efficacy of this procedure was subsequently examined in five prospective randomized controlled trials performed with some limitations, listed in the table. Meta-analysis of the randomized control trials examined a group of 763 patients (PP = 389, control = 374). It revealed a highly significant reduction in total arrhythmias and AF in the PP group (odds ratio 0.31 and 0.33, respectively). There was a 10.8% AF rate in the PP group (41/379) and a 28.1% AF rate in the control group (108/384). Furthermore...

Associação entre uveíte posterior ativa presumivelmente por Toxoplasma gondii e IgA secretora específica na lágrima

Isabel Lynch Gaete, Maria; Malagueno de Santana, Elizabeth (Orientador)
Fonte: Universidade Federal de Pernambuco Publicador: Universidade Federal de Pernambuco
Tipo: Outros
Português
Relevância na Pesquisa
35.93%
Toxoplasmose é a principal causa de uveíte posterior focal. A sorologia é importante para o esclarecimento diagnóstico. A mais relevante das imunoglubulinas contra o T. gondii, é a IgG, considerada marcador de contato prévio, seguida de IgA, IgE e IgM no soro, podendo ser determinadas também no humor aquoso. A IgA pela sua localização intravascular e ao nível de mucosas tem sido objeto de estudos para evidenciar seu papel no controle de parasitoses assim como indicadora diagnóstica de infecção recente. A IgA sérica tem sido observada nos primeiros meses após infecção por T. gondii e foi detectada IgA secretora específica (IgAs) na lágrima de indivíduos sadios porém IgG positivos para T. gondii. O presente estudo, objetivou estudar a associação de uveíte posterior ativa presumivelmente por T. gondii e a presença de IgA secretora específica na lágrima, assim como IgM, IgG e IgA sérica específicas para T. gondii. Participaram 75 indivíduos, 25 portadores da doença ocular e 50 controles sem a mesma, com IgG positiva para T. gondii. Considerou-se padrão de seleção (padrão ouro) lesões de uveíte posterior ativa, satélite de lesão cicatrizada. Foram determinadas a IgG, IgM, IgA sérica e IgAs...

Jointness in Bayesian Variable Selection with Applications to Growth Regression

Ley, Eduardo; Steel, Mark F. J.
Fonte: Banco Mundial Publicador: Banco Mundial
Português
Relevância na Pesquisa
35.72%
The authors present a measure of jointness to explore dependence among regressors in the context of Bayesian model selection. The jointness measure they propose equals the posterior odds ratio between those models that include a set of variables and the models that only include proper subsets. They show its application in cross-country growth regressions using two data-sets from the model-averaging growth literature.

Cataract in central Sri Lanka: Prevalence and risk factors from the kandy eye study

Athanasiov, P.; Edussuriya, K.; Senaratne, T.; Sennanayake, S.; Sullivan, T.; Selva-Nayagam, D.; Casson, R.
Fonte: Informa Healthcare Publicador: Informa Healthcare
Tipo: Artigo de Revista Científica
Publicado em //2010 Português
Relevância na Pesquisa
46%
Purpose:To estimate the prevalence of and risk factors for cataracts in the Kandy District of central Sri Lanka. Methods:A population-based, cross-sectional ophthalmic survey of the inhabitants of rural villages in central Sri Lanka was conducted; 1375 individuals participated (79.9%; age >/= 40 years, average age 57) and 1318 (95.9%) had an examinable lens in at least one eye. Data collection included district, age, occupation, education level, smoking history, height, weight and dilated lens assessment using Lens Opacities Classification System III grading: nuclear (≥4), cortical (≥2) and posterior subcapsular (≥2) cataracts. Aphakic and pseudophakic eyes were included as operated cataracts for statistical analysis. Results:The prevalence of any cataract including operated eyes was 33.1% (95% Confidence Interval (CI), 22.4–43.7%): 26.0% cortical; 7.9% posterior sub-capsular and 4.5% nuclear cataracts. No significant association was found between cataract and gender, smoking or outdoor occupation. Low level of education (secondary or higher vs no education: Odds Ratio (OR) 0.6, CI 0.4-0.9, P=0.04) and shorter stature were associated with a higher likelihood of any cataract (OR 1.7, CI 1.1-2.7, P=0.02). Conclusions:The overall prevalence of cataract in central Sri Lanka is similar to that in other developing Asian regions except for the unusually low prevalence of nuclear cataract. Illiteracy and height appear to be significant predictors for cataract in this population and further investigation is required to explore their influence.; Paul A. Athanasiov...

Do socioeconomic determinants affect the quality of posterior dental restorations? A multilevel approach

Correa, M.; De Anselmo Peres, M.; Glazer De Anselmo Peres, K.; Horta, B.; Barros, A.; Demarco, F.
Fonte: Elsevier Sci Ltd Publicador: Elsevier Sci Ltd
Tipo: Artigo de Revista Científica
Publicado em //2013 Português
Relevância na Pesquisa
45.93%
OBJECTIVES: This study aimed to evaluate posterior restorations placed in young adults, investigating the association between social determinants experienced during the life course and the quality of tooth fillings. METHODS: A representative sample (n=720) of all 5914 individuals who were born in Pelotas in 1982 was prospectively investigated, and posterior restorations were assessed at 24 years of age. Exploratory variables included demographic and socioeconomic, oral health and dental service payment mode during the life course. Tooth-related variables (type of tooth, material and size of cavity) were also analysed. RESULTS: Multilevel logistic regression models showed that individuals who were always poor from birth to age 23 [odds ratio (OR) 2.35 (1.38-4.00)] and whose mothers had less years of education at their birth (OR 2.60 (1.44-4.68)) were with unsatisfactory restorations in posterior teeth more often. In addition, caries presence at age 15 (high decayed, missing, filled teeth (DMFT) tertile) (OR 1.95 (1.25-3.03)) and cavities with four or more surfaces (OR 18.67 (9.25-37.68)) were associated with the outcome. CONCLUSIONS: These results show that socioeconomic characteristics of the individuals play an important role in restoration failures...

Bayesian Testing of Granger Causality in Markov-Switching VARs

DROUMAGUET, Matthieu; WOŹNIAK, Tomasz
Fonte: Instituto Universitário Europeu Publicador: Instituto Universitário Europeu
Tipo: Trabalho em Andamento Formato: application/pdf; digital
Português
Relevância na Pesquisa
66%
Recent economic developments have shown the importance of spillover and contagion effects in financial markets as well as in macroeconomic reality. Such effects are not limited to relations between the levels of variables but also impact on the volatility and the distributions. We propose a method of testing restrictions for Granger noncausality on all these levels in the framework of Markov-switching Vector Autoregressive Models. The conditions for Granger noncausality for these models were derived by Warne (2000). Due to the nonlinearity of the restrictions, classical tests have limited use. We, therefore, choose a Bayesian approach to testing. The inference consists of a novel Gibbs sampling algorithm for estimation of the restricted models, and of standard methods of computing the Posterior Odds Ratio. The analysis may be applied to financial and macroeconomic time series with complicated properties, such as changes of parameter values over time and heteroskedasticity.

Is maternal hypotension during pregnancy and/or posterior located placenta associated with increased risk of stillbirth? A case-control study

Warland, Jane Elizabeth
Fonte: Universidade de Adelaide Publicador: Universidade de Adelaide
Tipo: Tese de Doutorado Formato: 1688433 bytes; 45464 bytes; application/pdf; application/pdf
Publicado em //2007 Português
Relevância na Pesquisa
35.94%
Title: Is maternal hypotension during pregnancy and/or posterior located placenta associated with increased risk of stillbirth? Design: A retrospective case-controlled study comparing a group of stillbirths with a live born control group matched for maternal age, baby gender, gestational age and year of birth. The purpose of this study was to ascertain whether hypotensive women or women with a posterior located placenta are at increased risk of stillbirth. Two Australian tertiary referral obstetric hospitals were chosen as participating hospitals for this study. All cases with a discharge diagnosis of stillbirth over a five year period at these hospitals were identified and considered as cases for inclusion in the study. An attempt was made to match each case with two controls. After exclusions there were 124 cases and 243 controls. Blood pressure (BP) readings throughout pregnancy were extracted from the medical record of each subject, and summary 'exposure' measures were created. These included: diastolic and systolic readings as well as mean arterial pressure taken at the initial (booking BP), minimum, calculated average, and final reading prior to the birth. Placental position, as determined by midtrimester ultrasound, was also collected. Results: This study found that low Diastolic Blood Pressure (DBP) readings (between 60-70mmHg) throughout pregnancy were associated with a statistically significant increased risk of stillbirth. This trend was seen from the initial reading at booking (OR 1.83 95% CI 1.0-3.2...

A avaliação das unidades basicas de saude segundo os consumidores : a associação entre dados de produção das UBS de Campinas e as avaliações previa e posterior dos moradores das areas de cobertura dessas unidades

Carlos Roberto Silveira Correa
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 20/03/1998 Português
Relevância na Pesquisa
36.08%
Este trabalho tem por objetivo comparar unidades básicas de saúde (UBS) de Campinas, que têm produções diferentes, quanto à propensão à utilização de seus serviços por parte da população que lhes está adstrita e descrever os motivos dessa propensão. Parte-se do pressuposto de que a UBS cujos serviços a população tem maior propensão a utilizar é a mais acessível, e, dessa maneira, atende melhor à proposta do Sistema Único de Saúde (SUS), que espera que as UBS sejam a porta de entrada do sistema. Após a validação dos dados de produção, identificaram-se as UBS que seriam comparadas. Os indicadores de produção utilizados foram: consultas médicas de clínicos e pediatras, realizadas de janeiro a julho de 1997, divididas em 7 faixas etárias e, a seguir, agrupadas por sexo e por ser a primeira consulta do ano ou não dentro da unidade. Construiu-se uma matriz com 35 linhas, correspondentes a cada UBS analisada, e com 7 colunas nas quais estava o odds ratio (OR) ponderado para cada idade das consultas distribuídas por sexo e por set: a primeira consulta do ano ou não dentro da unidade. Com essa matriz mediu-se a distância entre as UBS e construiu-se um agrupamento, no qual as UBS que tinham produção parecida estavam mais próximas. Dessa maneira foram escolhidas duas UBS. Na área de cobertura dessas unidades foi aplicado de maneira aleatória um questionário que visava descrever a trajetória dos moradores em busca de consulta médica na última vez que ficaram doentes...

Use of prior odds for missing persons identifications

Budowle, Bruce; Ge, Jianye; Chakraborty, Ranajit; Gill-King, Harrell
Fonte: BioMed Central Publicador: BioMed Central
Tipo: Artigo de Revista Científica
Publicado em 27/06/2011 Português
Relevância na Pesquisa
36.03%
Identification of missing persons from mass disasters is based on evaluation of a number of variables and observations regarding the combination of features derived from these variables. DNA typing now is playing a more prominent role in the identification of human remains, and particularly so for highly decomposed and fragmented remains. The strength of genetic associations, by either direct or kinship analyses, is often quantified by calculating a likelihood ratio. The likelihood ratio can be multiplied by prior odds based on nongenetic evidence to calculate the posterior odds, that is, by applying Bayes' Theorem, to arrive at a probability of identity. For the identification of human remains, the path creating the set and intersection of variables that contribute to the prior odds needs to be appreciated and well defined. Other than considering the total number of missing persons, the forensic DNA community has been silent on specifying the elements of prior odds computations. The variables include the number of missing individuals, eyewitness accounts, anthropological features, demographics and other identifying characteristics. The assumptions, supporting data and reasoning that are used to establish a prior probability that will be combined with the genetic data need to be considered and justified. Otherwise...

Bayesian Odds-Ratio Filters: A Template-Based Method for Online Detection of P300 Evoked Responses

Mubeen, Asim M.; Knuth, Kevin H.
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 04/04/2013 Português
Relevância na Pesquisa
45.94%
Template-based signal detection most often relies on computing a correlation, or a dot product, between an incoming data stream and a signal template. While such a correlation results in an ongoing estimate of the magnitude of the signal in the data stream, it does not directly indicate the presence or absence of a signal. Instead, the problem of signal detection is one of model-selection. Here we explore the use of the Bayesian odds-ratio (OR), which is the ratio of posterior probabilities of a signal-plus-noise model over a noise-only model. We demonstrate this method by applying it to simulated electroencephalographic (EEG) signals based on the P300 response, which is widely used in both Brain Computer Interface (BCI) and Brain Machine Interface (BMI) systems. The efficacy of this algorithm is demonstrated by comparing the receiver operating characteristic (ROC) curves of the OR-based (logOR) filter to the usual correlation method where we find a significant improvement in P300 detection. The logOR filter promises to improve the accuracy and speed of the detection of evoked brain responses in BCI/BMI applications as well the detection of template signals in general.; Comment: 9 pages, 3 figures

A Bayesian Approach to Comparing Cosmic Ray Energy Spectra

BenZvi, S. Y.; Connolly, B. M.; Pfendner, C. G.; Westerhoff, S.
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 07/06/2011 Português
Relevância na Pesquisa
35.8%
A common problem in ultra-high energy cosmic ray physics is the comparison of energy spectra. The question is whether the spectra from two experiments or two regions of the sky agree within their statistical and systematic uncertainties. We develop a method to directly compare energy spectra for ultra-high energy cosmic rays from two different regions of the sky in the same experiment without reliance on agreement with a theoretical model of the energy spectra. The consistency between the two spectra is expressed in terms of a Bayes factor, defined here as the ratio of the likelihood of the two-parent source hypothesis to the likelihood of the one-parent source hypothesis. Unlike other methods, for example chi^2 tests, the Bayes factor allows for the calculation of the posterior odds ratio and correctly accounts for non-Gaussian uncertainties. The latter is particularly important at the highest energies, where the number of events is very small.; Comment: 22 pages, 10 figures, accepted for publication in ApJ

Salud oral y déficit nutricional en adultos mayores no institucionalizados en Londrina, Paraná, Brasil

Mesas,Arthur Eumann; Andrade,Selma Maffei de; Cabrera,Marcos Aparecido Sarria; Bueno,Vera Lúcia Ribeiro de Carvalho
Fonte: Associação Brasileira de Pós -Graduação em Saúde Coletiva Publicador: Associação Brasileira de Pós -Graduação em Saúde Coletiva
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2010 Português
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OBJETIVO: Examinar la asociación entre el déficit nutricional y problemas de salud oral en adultos mayores no institucionalizados de una comunidad en Brasil. MÉTODOS: En este estudio transversal fueron obtenidos datos de 267 adultos mayores (160 mujeres y 107 hombres) con edad entre los 60 y 74 años provenientes del censo del área de cobertura de un Equipo del Programa Salud de la Familia de Londrina, Brasil. El déficit nutricional fue identificado con la Mini Evaluación Nutricional (< 24 puntos). La valoración odontológica incluyó exploración bucodental, medición del flujo salivar estimulado y aplicación del Geriatric Oral Health Assessment Index para la percepción oral. Los análisis multivariantes fueron ajustados por variables sociodemográficas, depresión y consumo de medicamentos. RESULTADOS: El déficit nutricional fue detectado en 58 ancianos (21,7%). Entre las variables odontológicas, la ausencia de oclusión posterior (Odds Ratio, OR: 2,18; Intervalo de Confianza, IC95%: 1,06 - 4,45), el flujo salivar estimulado < 0,7 ml/minuto (OR: 2,18, IC95%: 1,06 - 4,50), la enfermedad periodontal avanzada (OR: 6,54; IC95%: 2,03 -21,00) y la percepción negativa de la salud oral (OR: 3,41; IC95%: 1,59 - 7,33) se asociaron al déficit nutricional de modo independiente del sexo...