Contents
What are the main objectives of epidemiology?
Aims of Epidemiology There are two groups of aims: first, to describe the distribution, the pattern, and the natural history of disease in the general population, and second, to identify factors that may be causal in a disease process, and to evaluate strategies for the control, management, and prevention of a disease.
What are the key aspects of epidemiology?
The epidemiologic triangle, depicts the relationship among three key factors in the occurrence of disease or injury: agent, environment, and host.
What are the branches of epidemiology?
Major areas of epidemiological study include disease causation, transmission, outbreak investigation, disease surveillance, environmental epidemiology, forensic epidemiology, occupational epidemiology, screening, biomonitoring, and comparisons of treatment effects such as in clinical trials.
Which is the most powerful epidemiological study?
Randomized, controlled clinical trials are the most powerful designs possible in medical research, but they are often expensive and time-consuming. Well-designed observational studies can provide useful insights on disease causation, even though they do not constitute proof of causes.
What is epidemiological concept?
(1) It is a quantitative science concerned in infectious diseases with the circumstances under which disease processes occur, the factors that affect their incidence and the host response to the infectious agent, and the use of this knowledge for control and prevention.
What are the five tasks of Epidemiology in public health?
In the mid-1980s, five major tasks of epidemiology in public health practice were identified: public health surveillance, field investigation, analytic studies, evaluation, and linkages. ( 17) A sixth task, policy development, was recently added.
What do you need to know about epidemiology?
This lesson is intended to answer those questions by describing what epidemiology is, how it has evolved and how it is used today, and what some of the key methods and concepts are. The focus is on epidemiology in public health practice, that is, the kind of epidemiology that is done at health departments.
How many pages is the principles of Epidemiology?
It is not intended to be an online course. (511 pages) for printable versions of text, figures, and tables. Recently, a news story described an inner-city neighborhood’s concern about the rise in the number of children with asthma.
How is the descriptive approach used in epidemiology?
The descriptive approach involves the study of disease incidence and distribution by time, place, and person. It includes the calculation of rates and identification of parts of the population at higher risk than others.