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...
A well-designed and properly analyzed case-control study is an efficient way of answering many questions. It is both faster and cheaper than a cohort study. The use and understanding of case-control studies are developments of modern epidemiology (Schlesselman, 1982; Miettinen, 1985). In a cas...
In this article, we review the features of a proper casecontrol study and contrast them with those of the more common cohort study. 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 ...
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-...
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...
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 ...
Case-control (case-control, case-controlled) studies are beginning to appear more frequently in the neurosurgical literature. They can be more robust, if well designed, than the typical case series or even cohort study to determine or refine treatment algorithms. The purpose of this review is to...
Dietary fat, fatty acid intakes and colorectal cancer risk in Chinese adults: a case-control study. Dietary fat, fatty acid intakes and colorectal cancer risk in Chinese adults: a case-control study.doi:10.1097/CEJ.0b013e32835e88c4The associations ... - 《European Journal of Cancer ...
A case-control study investigated the association between dietary fat and breast cancer in Saudi Arabian women attending a specialist hospital in Riyadh. Women with breast carcinoma (n= 499) newly diagnosed between 1996-2002, and control women (n = 498) randomly selected from patients' attendants...
Laparoscopic versus open wedge resection for gastrointestinal stromal tumors of the stomach: a single-center 8-year retrospective cohort study of 156 patie... The aim of this study was to compared laparoscopic (LWR) and open wedge resection (OWR) for the treatment of gastric gastrointestinal ...