Triad of Epidemiology

University:
Massachusetts Institute of Technology
Course:
HST 198 | Health Sciences and Technology
Academic year:

2024
Views:

101

Pages:

2
Author:

mason mc44

Triad of Epidemiology In a descriptive epidemiology perspective, researchregarding the frequency of disease varies according to changes in epidemiological variables consisting of person, place and time. Associational linkage in the field of epidemiology refers to the dependency or mutual influence between two or more variables, and this linkage can be causal or non-causal. Talking about disease, there is a characteristic relationship between the main triangular features, namely host, agent, and environment. As a determinant of disease, there are interactions between epidemiological variables. The three factors in the epidemiological triad continually interact. If interactions are balanced, a state of equilibrium is created. When the balance is disturbed, disease will appear. • Person (Person) Characteristics and attributes of parts of a populationis one of the determining factors in people who have an impact on the emergence of a disease. Differences in the rate of disease occurring in the host can arise due to different potential sources of exposure. Some of the elements that are person variables are: Age, Gender, Social class, Type of work, Income, Race and ethnic group (ethnicity), Religion, Marital status, Family size, age of head of family, Family structure and Parity factor. • Place The urgency of site variables in the study of disease etiology can be clearly explained in epidemic studies and migration studies. Place variables are local characteristics where people live, work and visit. Incident differencesevents based on place show differences in structurepeople or the environment they live in. Several location variables: 1. Government area boundaries (village, sub-district, district/city, province). 2. Cities and villages 3. Regions or places based on natural boundaries 4. Countries 5. Regional ‒ global • Time The relationship between time and disease becomes a fundamental need in epidemiological analysis caused by diseases that change over time to indicate etiology. Time variables can analyze different perspectives of the epidemic curve. Several disease patterns that can occur: 1. Sporadic (rare and irregular) 2. Endemic disease (predictable occurrence) 3. Epidemic (unusual event/KLB) 4. Propagating epedemics (diseases that continue to increase over time)

Triad of Epidemiology

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