What Are The Three Factors Of The Epidemiological Triangle?

What is the role of epidemiology?

It is the scientific method of investigation problem-solving used by disease detectives— epidemiologists, laboratory scientists, statisticians, physicians and other health care providers, and public health professionals—to get to the root of health problems and outbreaks in a community..

What are the 3 major types of epidemiological studies?

Three major types of epidemiologic studies are cohort, case-control, and cross-sectional studies (study designs are discussed in more detail in IOM, 2000). A cohort, or longitudinal, study follows a defined group over time.

What are the 3 types of risk factors?

The three categories of risk factors are detailed here:Increasing Age. The majority of people who die of coronary heart disease are 65 or older. … Male gender. … Heredity (including race) … Tobacco smoke. … High blood cholesterol. … High blood pressure. … Physical inactivity. … Obesity and being overweight.More items…

Why are epidemiological measures useful quizlet?

Epidemiological measures are useful tools because: They help determine which diseases may need greater public health campaign or prevention efforts. … An estimated 1.8 million infected individuals died from the disease. Calculate the incidence rate of tuberculosis per 100,000 in the population in 2015.

Why are epidemiological measures useful?

The essence of epidemiology is to measure disease occurrence and make comparisons between population groups. The current section introduces the commonly used measures that help our understanding of the distribution of disease in a given population.

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 is epidemiological evidence?

Unlike laboratory experiments, epidemiology provides evidence based on studies of human populations under real-world conditions. It largely avoids the extrapolations across species and levels of exposure that are required for the use of data from animal experiments, and which contribute large uncertainties.

What are the three factors of the epidemiological triangle quizlet?

The epidemiological Triangle model includes three key elements: the agent, host, and environment.

What three factors are considered in the epidemiological triangle?

Among the simplest of these is the epidemiologic triad or triangle, the traditional model for infectious disease. The triad consists of an external agent, a susceptible host, and an environment that brings the host and agent together.

What is the epidemiological triangle?

The Epidemiologic Triangle, sometimes referred to as the Epidemiologic Triad, is a tool that scientists use for addressing the three components that contribute to the spread of disease: an external agent, a susceptible host and an environment that brings the agent and host together.

What are epidemiological factors?

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).

Which feature is at the center of the epidemiological triangle?

f0005: The epidemiologic triangle. The host is the organism that gets the disease, the agent is the disease-causing organism, and the environment is that realm in which the interaction between the host and agent transpires.

What are the 5 main objectives of epidemiology?

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.

What is the epidemiological approach?

To a large degree, epidemiology is concerned with determining if there is an association between a characteristic or exposure and a disease. Epidemiologic reasoning involves an iterative process of hypothesis generation and testing.

How do epidemiologists figure out if a disease is transmissible?

Epidemiologists count cases of disease (or injury), consider the distribution of the cases, and define the affected population. If a problem is identified, they use data they collect to try to determine its cause and how it is being transmitted. They also recommend how best to control its spread within the population.

What are the two types of epidemiology?

Epidemiologic studies fall into two categories: experimental and observational.

What is the difference between a biological vector and a mechanical vector?

Biological vectors, such as mosquitoes and ticks may carry pathogens that can multiply within their bodies and be delivered to new hosts, usually by biting. Mechanical vectors, such as flies can pick up infectious agents on the outside of their bodies and transmit them through physical contact.