Helena Reis

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BACKGROUND Studies that considered only the leisure physical activity found that the physical inactivity is higher among lower-income individuals. There is a possibility that this association shows modifications, when considering transportation, work and domestic activities. OBJECTIVE To determine whether there is a difference between the prevalence of(More)
BACKGROUND Factors related to socioeconomic status and health care quality and management may influence mortality and morbidity rates due to acute myocardial infarction (AMI). OBJECTIVE To compare mortality and morbidity in patients with AMI hospitalized in public and private hospitals. METHODS An observational study, with comparison groups. Clinical(More)
The mainstream theory of choice under uncertainty in economics has been assuming that uncertainty faced by economic agents can be represented by a single probability distribution. This means that for economic agents the uncertainty they face is a known unknown , i.e., they have a perfect knowledge about it. However, as rst pointed out by Frank Knight [33],(More)
OBJECTIVE To verify if the maximal inspiratory pressure values with 40 seconds occlusion time are greater than with the 20 seconds occlusion time, and the impacts on the following patient's physiological variables: respiratory rate, pulse oxygen saturation, heart rate and blood pressure, before and after the measurements. METHODS This was a transversal(More)
Purpose – The purpose of this paper is to analyse the competitiveness of the European Union Member States of Southern Europe (France, Greece, Italy, Portugal and Spain) as tourist destinations for European Union Member States of Central and Northern Europe (Austria, Belgium, Denmark, Finland, Germany, The Netherlands, Ireland, Sweden and the UK).(More)
We classify the foliations associated to semi-complete vector fields at an isolated singularity of saddle-node type in C, i.e., associated to semi-complete vector fields in C, whose linear part is diagonalizable and with an isolated singularity, where the n − 1 non-vanishing eigenvalues of its linear part are nonresonant and in the Poincaré Domain. We will(More)
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