290 resultados para statistic


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O objetivo deste artigo é estimar a cobertura populacional do Sistema de Vigilância Alimentar e Nutricional (SISVAN) nos diferentes estágios de vida e avaliar seu funcionamento no estado de São Paulo. O estudo incluiu 65 municípios divididos em 14 regiões do estado. A cobertura do SISVAN foi estimada a partir de dados de monitoramento do estado nutricional disponíveis nos relatórios públicos, e do número de usuários que frequentam os serviços públicos de saúde. O total de usuários foi obtido pela diferença entre o total de habitantes e o número de beneficiários de planos de saúde privados. A maioria das regiões apresentou uma cobertura reduzida (<10%). Cerca de 57% revelaram cobertura entre 5 e 10%. Constatou-se uma preponderância de registros do estado nutricional de crianças para todas as regiões do Estado. Chama a atenção a reduzida cobertura entre os idosos, que é inexistente ou próxima de zero na maioria das regiões. Apesar dos esforços empreendidos pelo governo visando à ampliação e à qualificação do SISVAN, o monitoramento nutricional no estado de São Paulo ainda é insuficiente. Esta condição compromete sua utilização na elaboração de políticas efetivas na área de alimentação e nutrição.

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Based on the concept that horses have balanced symmetry between its anatomical regions, the aim of this study was to introduce a method of assessing the balance of equines through body proportions. Altogether twelve linear measurements, using metric tape, were measured in 234 horses Quarter Horses for evidence of barrel racing. From these measurements were built nine body proportions, each one given by the ratio of two specific measures, and the effects of sex, weight, age and degree of blood on the balance were evaluated. To check the significance tests we used the F statistic, considering P<0.05. It was found that the linear measurements ML2, ML3 and ML5 were mainly responsible for the disproportionality of the horses evaluated. The effect of sex was significant (P<0.05) for four proportions (R1, R3, R4 and R9) and females were more distant from the concept of balance than males.

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Leaf area estimate may contribute to understand the relationships of interference among weeds and crops. The objective of this research was to obtain a mathematical equation to estimate the leaf area of Euphorbia heterophylla based on linear measures of the leaf blade. Correlation studies were carried out using the real leaf area and leaf length (C) and the maximum leaf width (L) of 200 leaf blades which were collected from several agroecosystems at Universidade Estadual Paulista in Jaboticabal, SP, Brazil. The evaluated statistic models were: linear Y = a + bx; simple linear Y = bx; geometric Y = ax b; and exponential Y = ab x. All of the evaluated models can be used for E. heterophylla leaf area estimation. The simple linear regression model is suggested using C*L and taking the linear coefficient equal to zero. Thus, an estimate of the leaf area of E. heterophylla can be obtained using the equation Af' = 0.6816*(C*L).

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Phosphorus is one of the limiting nutrients for sugarcane development in Brazilian soils. The spatial variability of this nutrient is great, defined by the properties that control its adsorption and desorption reactions. Spatial estimates to characterize this variability are based on geostatistical interpolation. However, inherent uncertainties in the procedure of these estimates are related to the variability structure of the property under study and the sample configuration of the area. Thus, the assessment of the uncertainty of estimates associated with the spatial distribution of available P (Plabile) is decisive to optimize the use of phosphate fertilizers. The purpose of this study was to evaluate the performance of sequential Gaussian simulation (sGs) and ordinary kriging (OK) in the modeling of uncertainty in available P estimates. A sampling grid with 626 points was established in a 200-ha experimental sugarcane field in Tabapuã, São Paulo State. The sGs algorithm generated 200 realizations. The sGs realizations reproduced the statistics and the distribution of the sample data. The G statistic (0.81) indicated good agreement between the values of simulated and observed fractions. The sGs realizations preserved the spatial variability of Plabile without the smoothing effect of the OK map. The accuracy in the reproduction of the variogram of the sample data obtained by the sGs realizations was on average 240 times higher than that obtained by OK. The uncertainty map, obtained by OK, showed less variation in the study area than that obtained by sGs. Thus, the evaluation of uncertainties by sGs was more informative and can be used to define and delimit specific management areas more precisely.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Pós-graduação em Pesquisa e Desenvolvimento (Biotecnologia Médica) - FMB

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Pós-graduação em Biologia Geral e Aplicada - IBB

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Introduction: Among others things, ageing results in neuromuscular decrease. The physical activity practice may to influence positively the ageing process. Objective: To evaluate the flexibility and the level of pain on the sedentary and physically active elderly. Method: Forty-two elderly participated of this study, both male and female, (twenty-two physically active and twenty sedentary), over sixty years old and functionally capable to perform the evaluations suggested. They were submitted to tests of decrease in anterior flexion of the trunk, Stibor and Shoeber to evaluate the flexibility and then they signalized the level of pain on the analogic visual scale. The data obtained on the valuations has been analyzed utilizing the non-parametric statistic test Mann-Whitney, considering the level of significance of 5% (p<0,05), in order to compare the performance among the groups. Results: It has not been observed significant di- fferences among the groups referring to the tests Stibor and analogic visual scale. On Shoeber and FAT tests has been observed significant differences (p<0,05) among the groups, with a better performance to the active group. Conclusion: The physical activity practicing interfere on the mobility and on the flexibility of the elderly body segment.

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Pós-graduação em Genética e Melhoramento Animal - FCAV

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Pós-graduação em Zootecnia - FCAV

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O acompanhamento do desenvolvimento de bebês implica na consideração de fatores de risco para os mesmos e na utilização de instrumentos que possibilitem a identificação de defasagens, comportamentais, visando à elaboração de intervenções pontuais junto a pais e outros cuidadores. O presente estudo prendendeu descrever variáveis distais e proximais do desenvolvimento de uma amostra de bebês, a partir de suas características peculiares, bem como das dos seus familiares e avaliar o repertório comportamental dos bebês, correlacionando-o com variáveis de risco como prematuridade, baixo peso ao nascer e filhos de mães adolescentes, comparando-o com bebês sem condição de risco identificada. Pretendeu, também, identificar comportamentos típicos nas áres do desenvolvimento avaliadas pelo inventário portage operacionalizado, mês a mês, durante o primeiro ano de vida, utilizando os critérios de estabilização, normalização e aparecimento destes comportamentos entre os meninos e meninas. Participaram do estudo 217 bebês que foram avaliados no decorrer do primeiro ano de vida, sendo que 33% eram prematuros, 28% filhos de mães adolescentes, 11% com baixo peso nascidos a termo, 3% sindrômicos ou filhos de mães portadoras de HIV+ e 25% do Grupo Controle, sem condições de risco identificado no nascimento. Os dados foram coletados a partir da entrevista inicial e da avaliação mensal do inventário. Os dados foram coletados a partir da entrevista inicial e da aplicação mensal do inventário portage operacionalizado (IPO), em um Centro de Psicologia Aplicada de uma universidade pública. Os desempenhos dos bebês no IPO e as condições de risco identificadas foram submetidas ao tratamento por meio do Statistic Package Social for Science (SPSS, versão 12.0). para a identificação de comportamentos típicos utilizaram-se os critérios de Estabilização... (Resumo completo, clicar acesso eletrônico abaixo)

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Background Anorexia Nervosa ( AN) is an illness characterised by extreme concern about body weight and shape, severe self-imposed weight loss, and endocrine dysfunction. In spite of its high mortality, morbidity and chronicity, there are few intervention studies on the subject.Objectives The aim of this review was to evaluate the efficacy and acceptability of antidepressant drugs in the treatment of acute AN.Search strategy The strategy comprised of database searches of the Cochrane Collaboration Depression, Anxiety and Neurosis Controlled Trials Register, MEDLINE (1966 to April 28th, 2005), EMBASE (1980 to week 36, 2004), PsycINFO (1969 to August week 5, 2004), handsearching the International Journal of Eating Disorders and searching the reference lists of all papers selected. Personal letters were sent to researchers in the field requesting information on unpublished or in-progress trials.Selection criteria All randomised controlled trials of antidepressant treatment for AN patients, as de fined by the Diagnostic and Statistical Manual, fourth edition (DSM-IV) or similar international criteria, were selected.Data collection and analysis Quality ratings were made giving consideration to the strong relationship between allocation concealment and potential for bias in the results; studies meeting criteria A and B were included. Trials were excluded if non-completion rates were above 50%. The standardised mean difference and relative risk were used for continuous data and dichotomous data comparisons, respectively. Whenever possible, analyses were performed according to intention- to-treat principles. Heterogeneity was tested with the I-squared statistic. Weight change was the primary outcome. Secondary outcomes were severity of eating disorder, depression and anxiety symptoms, and global clinical state. Acceptability of treatment was evaluated by considering non-completion rates.Main results Only seven studies were included. Major methodological limitations such as small trial size and large confidence intervals decreased the power of the studies to detect differences between treatments, and meta-analysis of data was not possible for the majority of outcomes. Four placebo-controlled trials did not find evidence that antidepressants improved weight gain, eating disorder or associated psychopathology. Isolated findings, favouring amineptine and nortriptyline, emerged from the antidepressant versus antidepressant comparisons, but cannot be conceived as evidence of efficacy of a specific drug or class of antidepressant in light of the findings from the placebo comparisons. Non-completion rates were similar between the compared groups.Authors' conclusions A lack of quality information precludes us from drawing de finite conclusions or recommendations on the use of antidepressants in acute AN. Future studies testing safer and more tolerable antidepressants in larger, well designed trials are needed to provide guidance for clinical practice.

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)