Universidade de Pernambuco

About: Universidade de Pernambuco is a education organization based out in Recife, Brazil. It is known for research contribution in the topics: Population & Medicine. The organization has 6147 authors who have published 6948 publications receiving 73648 citations.

Bariatric surgery and bone metabolism: a systematic review

Abstract: Few studies have demonstrated the risk of metabolic bone disease and a reduction in bone mineral density (BMD) after bariatric surgery. A systematic review was conducted of case-control and cohort studies with the aim of evaluating the relationship between bariatric surgery and bone metabolism. The search was undertaken in MedLine, covering the period from January 1997 to August 2009, using the keywords: "bariatric surgery" AND "osteoporosis", "fracture", "bone diseases", "metabolic". Six studies were included, comprising four cohort and two case-control studies. Three studies evaluated bone metabolism and BMD, and the other evaluated bone metabolism only. Based on this review, bariatric surgery is associated with alterations in bone metabolism, loss of bone mass and an increased risk of fracture. However, the maximum evaluation period covered by these studies was two years after surgery, hence the need to undertake further studies of longer duration in order to achieve a more thorough understanding of this association.

Risk factors for syphilis in women: case-control study.

Abstract: OBJETIVO Determinar os fatores sociodemograficos, comportamentais e de assistencia a saude relacionados a ocorrencia de sifilis em mulheres atendidas em maternidades publicas. METODOS Trata-se de um estudo caso-controle (239 casos e 322 controles) com mulheres admitidas em sete maternidades do municipio do Recife, no periodo de julho de 2013 a julho de 2014. As mulheres […]

Headaches and academic performance in university students: a cross-sectional study.

Abstract: Objectives.— To estimate the 1-year prevalence of headache, its repercussion and its association with the academic performance of university students. Methods.— Cross-sectional study. Three hundred eighty students were randomly selected out of the 1718, 90.5% of them were interviewed. A semi-structured interview, the Headache Impact Test (HIT-6) and the Hospital Anxiety and Depression Scale were used. The variables related to academic performance: absenteeism, performance coefficient and number of failures in disciplines, were obtained by consulting the academic records. Results.— Three hundred forty-four students were interviewed. The headache prevalence was 87.2%. Migraine prevalence was 48.5%. Tension-type headache prevalence was 42.4%. During the 3 months prior to the interview, 8.7% sought emergency services, 30.8% missed class, and 30.8% had a reduction in their productive capacity because of headache. HIT-6: substantial/severe impact = 49%. Multiple linear regressions have shown that serious/very serious-impact headaches are significantly related to greater number of discipline failure and absenteeism. There was no association between student grades and headaches. Conclusion.— A high prevalence of headache in the studied population was verified. A high headache impact on a student's life was associated with worse academic performance.

A Context Based Text Summarization System

Abstract: Text summarization is the process of creating a shorter version of one or more text documents. Automatic text summarization has become an important way of finding relevant information in large text libraries or in the Internet. Extractive text summarization techniques select entire sentences from documents according to some criteria to form a summary. Sentence scoring is the technique most used for extractive text summarization, today. Depending on the context, however, some techniques may yield better results than some others. This paper advocates the thesis that the quality of the summary obtained with combinations of sentence scoring methods depend on text subject. Such hypothesis is evaluated using three different contexts: news, blogs and articles. The results obtained show the validity of the hypothesis formulated and point at which techniques are more effective in each of those contexts studied.