Case controlCohortEPIDEMIOLOGYStudies the epidemiology of childhood cancer using case-control and cohort methods of investigation. Differences in the two methods; Calculation of odds ratio in case-control study and relative risks in cohort study; Advantages and disadvantages of the two methods.Bell...
Nested case–control studies are a variation on case–control studies and encompass the concept of a cohort study. In a nested case–control study, a large cohort is prospectively or retrospectively followed for the occurrence of a specific disease. These cases are then matched by age and sex ...
Risk Factors for Pneumonia in Urban-Dwelling HIV-Infected Women: A Case-Control Study in Nairobi, Kenya. Investigates the risk factors for pneumonia in a cohort of HIV-infected women in sub-Saharan Africa. Relations between pneumonia and HIV infection; Inciden... Penner,Jeremy,Meier,... - 《...
Statisticians have contributed enormously to the conceptualization, development, and success of case-control methods for the study of disease causation and prevention. This article reviews the major developments. It starts with Cornfield''s demonstration of odds ratio invariance under cohort versus case-...
Characteristics of the study cohort are presented in Table 1. There was male dominance (58%) and the mean age was 67 years. More than half of the sepsis patients had a CCI of ≥ 2 compared to 18% in the control group. The most common comorbidities among the sepsis patients were ...
Special challenges are involved when conducting primary case–control, cohort and related observational studies in older adults. While the challenges are not unique, there are a host of features that dominate such studies, including the recruitment of older adults into research studies, the ethical hu...
A case–control study was conducted between September 2018 and March 2020, nested within an ongoing prospective cohort study recruiting adult (≥ 18 years) presumptive TB patients in the Temeke District of Dar-es-Salaam, Tanzania (TB DAR). To meet clinical team capacity constraints, the recrui...
Confusing the control series of a cohort study with the 'controls' in a case-control study leads to serious problems with understanding the research, its strengths and drawbacks (e.g. confounding concerns), and interpretation of the findings. Although the case-control design has so far been ...
Case-Control StudiesCohort StudiesHypertensionMeta-Analysis as TopicRandomized Controlled Trials as TopicBackground: In the hierarchy of research designs, the ... Concato,John,Shah,... - 《New England Journal of Medicine》 被引量: 7570发表: 2000年 Observational versus experimental studies: what's...
Out of 140 individuals, 20% (n = 28) were seropositive for anti-T. gondiiIgG, 0% for IgM. In the ADHD group, 27.1% (n = 19) were seropositive for anti-T. gondiiIgG versus 12.9% (n = 9) in the control group. ADHD showed a significant association with anti-T. ...