Pedro Nuno Oliveira

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BACKGROUND Growth-curves are an important tool for evaluating the anthropometric development in pediatrics. The different growth-curves available are based in different populations, what leads to different cut-offs. Pediatric obesity tracks into adulthood and is associated with increased cardiovascular risk. The accurate assessment of a child nutritional(More)
PURPOSE The purpose of this paper is to use the kernel method to produce a smoothed receiver operating characteristic (ROC) curve and show how baby gender can influence Clinical Risk Index for Babies (CRIB) scale according to survival risks. DESIGN/METHODOLOGY/APPROACH To obtain the ROC curve, conditioned by covariates, two methods may be followed: first,(More)
The aim of this study was to analyze the prevalence of poor self-rated health according to socio-demographic variables and the presence of chronic diseases in the populations of Brazil and Portugal. A total of 13,894 individuals ≥ 30 years of age were studied in capitals in Northeast Brazil (VIGITEL 2011) and 20,579 in Portugal (4th NHI, 2005/2006). Poisson(More)
This paper proposes two new measures to assess performance of surgical practice based on observed mortality: reliability, measured as the area under the ROC curve and a living score, the sum of individual risk among surviving patients, divided by the total number of patients. A Monte Carlo simulation of surgeons' practice was used for conceptual validation(More)
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