Question: What Are The Approaches Of Epidemiology?

What are the basic principles of epidemiology?

Uses of EpidemiologyCount health-related events.Describe the distribution of health-related events in the population.Describe clinical patterns.Identify risk factors for developing diseases.Identify causes or determinants of disease.Identify control and/or preventive measures.More items…•.

What is an example of epidemiology?

Epidemiological studies measure the risk of illness or death in an exposed population compared to that risk in an identical, unexposed population (for example, a population the same age, sex, race and social status as the exposed population).

What is a incidence?

Incidence is a measure of disease that allows us to determine a person’s probability of being diagnosed with a disease during a given period of time. Therefore, incidence is the number of newly diagnosed cases of a disease.

What are the limitations of epidemiology?

Problems of accuracy of diagnosis or causes of death on death certificates, estimates of population, migration from areas of study, and the issue of “ecological fallacy” are discussed. Retrospective studies have such problems as recall of previous environmental exposure, selection bias and survivor bias.

What are the four methods of epidemiology?

Epidemiological studies generally fall into four broad categories:cross-sectional studies.cohort studies.intervention studies.

What are the three basic types of epidemiological investigation?

Here are three of the most basic types: a case report, a case series, and an inci- dence study. These types of study involve no comparison group. They are merely descriptive. A case report is a detailed description of the person, place, and time information of a specific case of disease or condition.

What are the tools of epidemiology?

Proportions, ratios, rates, prevalence, incidence, study designs, bias, confounding, effect modification, odds and risk ratios, statistical power, and confidence intervals are defined and discussed. Descriptive epidemiology is concerned with describing the distribution of disease by person, place, and time.

What are the two types of epidemiology?

Epidemiologic studies fall into two categories: experimental and observational.

What are the 5 W’s of epidemiology?

The difference is that epidemiologists tend to use synonyms for the 5 W’s: diagnosis or health event (what), person (who), place (where), time (when), and causes, risk factors, and modes of transmission (why/how).

What are the three components of epidemiology?

The epidemiologic triangle is made up of three parts: agent, host and environment.Agent. The agent is the microorganism that actually causes the disease in question. … Host. The agent infects the host, which is the organism that carries the disease. … Environment. … HIV.

What is the best definition of epidemiology?

By definition, epidemiology is the study (scientific, systematic, and data-driven) of the distribution (frequency, pattern) and determinants (causes, risk factors) of health-related states and events (not just diseases) in specified populations (neighborhood, school, city, state, country, global).

What is a risk in epidemiology?

Risk. (1) Epidemiological definition. The probability that an event will occur e.g. that an individual will become ill or die within a stated period of time or age. Formally defined as the proportion of initially disease free individuals who develop disease over a defined period of observation.