Results 131 to 140 of about 41,231,447 (258)

Soroprevalência da doença de Chagas em crianças em idade escolar do Estado do Espírito Santo, Brasil, em 1999-2000

open access: yesCadernos de Saúde Pública
Embora o Estado do Espírito Santo não seja considerado endêmico para a doença de Chagas, triatomíneos silvestres que lá ocorrem freqüentemente invadem as casas, com chances de transmissão da doença às pessoas.
Paulo Augusto Sessa   +3 more
doaj   +2 more sources

Prevalence of the patients with history of hepatitis in a dental faculty [PDF]

open access: yes, 2006
Objectives: The aim of the study is to investigate the prevalence of the dental patients who had a history of hepatitis. Study design: A total of 13.527 records of patients who were examined between October 1, 2002 and October 1, 2004 were reviewed ...
Bayirh, Gündüz   +3 more
core  

Investigating ethnic inequalities in the incidence of sexually transmitted infections: mathematical modelling study.

open access: yes, 2004
OBJECTIVES: To investigate ethnic differences in rates of gonorrhoea using empirical sexual behaviour data in a simple mathematical model. To explore the impact of different intervention strategies in this simulated population. METHODS: The findings from
Garnett, GP   +4 more
core   +2 more sources

Factors determining the pattern of the variant Creutzfeldt-Jakob disease (vCJD) epidemic in the UK.

open access: yes, 2003
Following the emergence of a new variant of Creutzfeldt-Jakob disease (vCJD) 6 years ago, and the gradual rise in clinical cases, there has been increased speculation regarding the overall magnitude of this epidemic in Great Britain.
Anderson, Roy M   +3 more
core   +2 more sources

Propensity-score matching analysis in COVID-19-related studies: a method and quality systematic review [PDF]

open access: yesarXiv
Objectives: To provide an overall quality assessment of the methods used for COVID-19-related studies using propensity score matching (PSM). Study Design and Setting: A systematic search was conducted in June 2021 on PubMed to identify COVID-19-related studies that use the PSM analysis between 2020 and 2021. Key information about study design and PSM
arxiv  

A seroepidemiological study of cytomegalovirus and Epstein-Barr virus in rheumatoid arthritis and sicca syndrome. [PDF]

open access: bronze, 1985
Patrick J Venables   +5 more
openalex   +1 more source

Improving Transportability of Regression Calibration Under the Main/External Validation Study Design [PDF]

open access: yesarXiv
In epidemiology, obtaining accurate individual exposure measurements can be costly and challenging. Thus, these measurements are often subject to error. Regression calibration with a validation study is widely employed as a study design and analysis method to correct for measurement error in the main study due to its broad applicability and simple ...
arxiv  

Improving Study Skills using Program Integrating Reflection Seminars [PDF]

open access: yesarXiv, 2016
If students have a broad spectrum of study skills, learning will likely be positively affected, since they can adapt the way they learn in different situations. Such study skills can be learned in for example learning-to-learn courses. Several studies of such courses have been done over the years, but few of these have been carried out in longitudinal ...
arxiv  

Gastric Cardia Cancer; The Most Common Type of Upper Gastrointestinal Cancer in Ardabil, Iran: An Endoscopy Clinic experience [PDF]

open access: yes
Background-According to a recent report published by the Ministry of Health and Medical Education of the I. R. of Iran, gastric cancer (GC) is the most common fatal cancer in this country and its prevalence is highest in Ardabil province, Northwest of ...
درخشان, محمدحسین   +4 more
core  

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