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Background Advantages of midwife-led models of care have been reported; these include a higher vaginal birth rate and less interventions. In Germany, 98.4% of women are giving birth in obstetrician-led units.
Sophia L. Tietjen +7 more
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Much medical research is observational. The reporting of observational studies is often of insufficient quality. Poor reporting hampers the assessment of the strengths and weaknesses of a study and the generalisability of its results. Taking into account
Jan P. Vandenbroucke +8 more
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Social Contact Patterns Associated With Tuberculosis: A Case-control Study in Southwest Iran [PDF]
Objectives Tuberculosis (TB) is a major public health concern worldwide. Social contact patterns can affect the epidemiology and risk of airborne diseases such as TB.
Neda Amoori +3 more
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Designing Case-Control Studies [PDF]
Identification of confounding factors, evaluation of their influence on cause-effect associations, and the introduction of appropriate ways to account for these factors are important considerations in designing case-control studies. This paper presents designs useful for these purposes, after first providing a statistical definition of a confounding ...
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Research Design: Case-Control Studies
Case-control studies are observational studies in which cases are subjects who have a characteristic of interest, such as a clinical diagnosis, and controls are (usually) matched subjects who do not have that characteristic.
Chittaranjan Andrade
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Methodology series module 2: Case-control studies
Case-Control study design is a type of observational study. In this design, participants are selected for the study based on their outcome status. Thus, some participants have the outcome of interest (referred to as cases), whereas others do not have the
Maninder Singh Setia
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Sample Size and Statistical Power Calculation in Genetic Association Studies [PDF]
A sample size with sufficient statistical power is critical to the success of genetic association studies to detect causal genes of human complex diseases.
Eun Pyo Hong, Ji Wan Park
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Study design V. Case–control studies [PDF]
Previously in this series I have given an overview of the main types of study design and the techniques used to minimise biased results. In this article I describe more fully case control studies, their uses, advantages and limitations.
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Effects of antibiotic consumption on children 2-8 years of age developing asthma [PDF]
OBJECTIVES Antibiotic exposure in children is a possible contributor to the increasing asthma prevalence in several countries. The present study aimed to investigate the association between antibiotic exposure and the risk of developing childhood asthma ...
Hamid Reza Khalkhali +5 more
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Background In May 2015, a cholera outbreak that had lasted 3 months and infected over 100 people was reported in Kasese District, Uganda, where multiple cholera outbreaks had occurred previously.
Benon Kwesiga +5 more
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