Coleção de Artigos Acadêmicos

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The impact of gestational weight gain on fetal and neonatal outcomes: the Araraquara Cohort Study
(2024) Victor, Audêncio; Teles, Laísla de França da Silva; Aires, Isabel Oliveira; Carvalho, Leticia Falcão de; Luzia, Liania A.; Victor, Audêncio; Teles, Laísla de França da Silva; Rinaldo Artes; RINALDO ARTES; Rondó, Patrícia H.
Background: Gestational weight gain (GWG) is an important indicator for monitoring maternal and fetal health. Objective: To evaluate the effect of GWG outside the recommendations of the Institute of Medicine (IOM) on fetal and neonatal outcomes. Study design A prospective cohort study with 1642 pregnant women selected from 2017 to 2023, with gestational age≤18 weeks and followed until delivery in the city of Araraquara, Southeast Brazil. The relationship between IOM recommended GWG and fetal outcomes (abdominal subcutaneous tissue thickness, arm and thigh subcutaneous tissue area and intrauterine growth restriction) and neonatal outcomes (percentage of fat mass, fat-free mass, birth weight and length, ponderal index, weight adequateness for gestational age by the Intergrowth curve, prematurity, and Apgar score) were investigated. Generalized Estimating Equations were used. Results: GWG below the IOM recommendations was associated with increased risks of intrauterine growth restriction (IUGR) (aOR 1.61; 95% CI: 1.14–2.27), low birth weight (aOR 2.44; 95% CI: 1.85–3.21), and prematurity (aOR 2.35; 95% CI: 1.81–3.05), and lower chance of being Large for Gestational Age (LGA) (aOR 0.38; 95% CI: 0.28–0.54), with smaller arm subcutaneous tissue area (AST) (-7.99 g; 95% CI: -8.97 to -7.02), birth length (-0.76 cm; 95% CI: -1.03 to -0.49), and neonatal fat mass percentage (-0.85%; 95% CI: -1.12 to -0.58). Conversely, exceeding GWG guidelines increased the likelihood of LGA (aOR 1.53; 95% CI: 1.20–1.96), with lower 5th-minute Apgar score (aOR 0.42; 95% CI: 0.20–0.87), and increased birth weight (90.14 g; 95% CI: 53.30 to 126.99). Conclusion: Adherence to GWG recommendations is crucial, with deviations negatively impacting fetal health. Effective weight control strategies are imperative.
Estimating total claim size in the auto insurance industry: a comparison between tweedie and zero-adjusted inverse gaussian distribution
(2011) ADRIANA BRUSCATO BORTOLUZZO; DANNY PIMENTEL CLARO; Caetano, Marco Antonio Leonel; RINALDO ARTES
An Autoregressive Model for Time Series of Circular Data
(2010) RINALDO ARTES; Toloi, Clelia M. C.
This article focuses on estimating an autoregressive regression model for circular time series data. Simulation studies have shown the difficulties involved in obtaining good estimates from low concentration data or from small samples. It presents an application using real data.
Hypothesis Tests for Covariance Analysis Models for Circular Data
(2008) RINALDO ARTES
Does it pay to antecipate competitor reactions?
(2008) RINALDO ARTES; Moura, Marcelo L.; Caetano, Marco Antônio Leonel; SERGIO GIOVANETTI LAZZARINI; Goldberg, Marcelo B.; Silva, César E.
Analyzing and anticipating competitor moves has been central to modern competitive strategy. In contexts involving intense interfirm interaction, the value of a particular strategy depends in large part on how competitors will react to it. Despite many developments, anecdotal evidence indicates that the effective use of techniques to gauge decisions based on competitive considerations has been scant in practice. Our paper intends to fill this void. Using data from the auto insurance industry in Brazil, we compare strategies that do and do not anticipate competitor reactions. Basically we show that it does pay to anticipate those reactions. An optimal strategy will explore both demand elasticities and competitors’ patterns of reaction. We show that such “strategic” policy is expected to outperform a “myopic” approach which ignores competitor reactions. We also develop a methodology to compute demand elasticities, reaction functions and numerically compute optimal reaction strategies.
Apolipoprotein E genotype is related to nitric oxide production in platelets
(2008) RINALDO ARTES; Marcourakis, Tania; Bahia, Valéria S.; Kawamoto, Elisa M.; Nitrini, Ricardo; Caramelli, Paulo; Kok, Fernando; Scavone, Cristoforo; Curi, Rui; Munhoz, Carolina D.; Gorjão, Renata
Self-reported and neuropsychological measures of impulsivity in pathological gambling
(2006) RINALDO ARTES; Gorenstein, Clarice; Tavares, Hermano; Fuentes, Daniel
Cognitive performance in depressed patients after chronic use of antidepressants
(2006) RINALDO ARTES; Gorenstein, Clarice; Carvalho, Stefania Caldeira de; Moreno, Ricardo Alberto; Marcourakis, Tania
Cardiac Arrhythmias and Atrioventricular Block in a Cohort of Asymptomatic Individuals without Heart Disease
(2007) DePaula, Rogério Silva; Antelmi, Ivana; Vincenzi, Marcos Antonio; André, Carmen Diva Saldiva; RINALDO ARTES; Grupi, Cesar José; Mansur, Alfredo José
Premenstrual dysphoric symptoms amongst Brazilian college students: factor structure and methodological appraisal
(2005) RINALDO ARTES; Teng, Chei-Tung; Vieira Filho, Antônio Helio Guerra; Gorenstein, Clarice; Andrade, Laura Helena Silveira Guerra

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