Chapter 23 Types of Epidemiological StudyEpidemiology, Introduction
Types of Biases Epidemiological studies are designed to evaluate a hypothesized relationship between an exposure and an outcome; however, the existence and/or magnitude of these relationships may be erroneously affected by the design and execution of the study itself or by conscious or unconscious ...
Numerous observational studies have reported a strong link between dietary habits and the risk of prostate cancer. However, these studies are susceptible to confounding factors. To address this question, we conducted a two-sample Mendelian randomization (MR) study to explore the causal relationship bet...
Objective: To describe serotypes of Streptococcus pneumoniae from healthy children and paediatric patients < 5 years old. Study design: Multi-center microbiological and epidemiological study. Materials and Methods: 584 strains of pneumococci from 18 c
Epidemiological Examination: Descriptive statistics aid in dissecting disease prevalence, mortality ratios, and healthcare data, facilitating comprehension of malady diffusion and repercussions. Clinical Trials: Researchers employ descriptive statistics to distill patient profiles, treatment outcomes, and adverse ...
Alzheimer’s disease (AD) is a chronic neurodegenerative disease characterized by the progressive accumulation of amyloid-beta and neurofibrillary tangles of tau in the neocortex. We profiled DNA methylation in two regions of the cortex from 631 donors, performing an epigenome-wide association study ...
– The authors had for aim to study the distribution of HIV-1 subtypes in a cohort of HIV-1 positive patients in the University hospital of Saint-Etienne, France, and to describe the epidemiological characteristics of patients infected with a non-B subtype strain. Design. – An epidemiological...
This study of pooled data from 12 US and European cohorts examines the association of leisure-time physical activity with incidence of 26 common types of
Epidemiological studies have clearly established human papilloma-virus (HPV) infection as the central cause of invasive cervical cancer (ICC). This is the second most common cancer among women worldwide and the most common female cancer in large areas of the developing world where an estimated 80...
Study design and participants The English Longitudinal Study of Ageing (ELSA) is an ongoing, nationally representative, longitudinal population study of adults aged ≥50 years living in England. ELSA was established in 2002, using a variety of biological, psychological and sociological measures to asse...