Studies Epidemiologists
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Influence of the genital infection for the human Papilomavirus in the feminine cycle sexual / Influência da infecção genital pelo Papilomavirus humano no ciclo de resposta sexual feminino
INTRODUÇÃO: O Papilomavirus humano (HPV) causa a grande maioria dos casos de câncer de colo uterino. Estudos epidemiológicos têm associado parâmetros relacionados à atividade sexual como principais fatores de risco para infecção pelo HPV e câncer de colo uterino. Assim, o diagnóstico de câncer ginecológico e lesões pré-malignas podem ter profu
Publicado em: 2009
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2. Application of meta-analysis in reviewing occupational cohort studies.
Meta-analysis has been used increasingly in reviewing and summarising epidemiological studies. Reviews incorporating meta-analyses have appeared in medical journals in increasing numbers. Although there are several methodology papers on meta-analysis, most of these papers have been written primarily for discussion among epidemiologists. The present paper con
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3. The accuracy of officially reported suicide statistics for purposes of epidemiological research.
Suicide is underreported for a number of reasons and the reliability of the official rates is subject to error from variation in defining and reporting cases--the kind of inaccuracies encountered when ascertaining cases in studies of mortality from any cause. Nevertheless, the evidence from studies designed to see whether these sources of error invalidate th
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4. Deriving relative risks from aggregate data. 1. Theory.
Sociological macro analyses of the association between risk factors and mortality can be seen as a valuable supplement to epidemiological micro studies. However, sociologists and epidemiologists typically employ different measures of association and this hampers strict comparisons of findings. This study presents a synthetic approach relying on both micro an
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5. Does occupational exposure to dust prevent colorectal cancer?
OBJECTIVES--To explore the impression that occupational epidemiologists tend to focus on associations suggestive of increased risk and tend to ignore those associations in which risk is not increased. To examine the risk of colorectal cancer in cohorts exposed to dust, cohorts in which it has been suggested that occupational exposure is a cause of increased
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6. Options in making use of pregnancy history in planning and analysing studies of reproductive failure.
BACKGROUND--Although more epidemiological studies of reproductive health have been published recently, important scientific achievements remain few. Among the reasons for this are existing methodological constraints. Fertility is low in most parts of the industralized world, making the observation time short. Pregnancy itself is under extremely close medical
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7. The role of epidemiology and surveillance systems in the control of sexually transmitted diseases.
Surveillance and epidemiological studies are essential components of effective control programmes for sexually transmitted diseases. While other forms of basic biomedical research may add to our understanding of why an exposure or behaviour causes or prevents disease, only epidemiology allows the quantification of the magnitude of the exposure-disease relati