University:
The University Of Western Ontario
Course:
Biology 2290F | Scientific Method in Biology
Academic year:

2022
Views:

254

Pages:

2
Author:

Kyuwon J.

Public health target It's all about answering question Which cause should we try to prevent?? ● Person 1 has causes W, X, and Y. ● Person 2 has causes X, Y, and Z. ● Person 3 has causes W, Z, and Y. How many causes appear each and which occurs the most? ● Cause W ○ 2 occurrent ● Cause X ○ 2 occurrence ● Cause Y ○ 3 occurrence ● Cause Z ○ 2 occurrence Since cause Y has the most occurrence in the population, it is most ideal to try to prevent Cause Y. Public health targets ● Identifying component causes that are commonly cross many people. Identity the exposure and environment for interventions + prevention efforts ● Blocking the action of any components cause prevent the completion of the sufficient cause ○ Prevents the dies by that pathway but other pathway remains possible ● Strong causes ○ Casual role in long proportion of cases ● Weak causes ○ Casual components in a small proportion of cases ● Strength of case necessarily depends on the prevalence of other causal factors that produce the disease ● Strength of effect is not biologically stable characteristic of risk factor ○ Relates to proportion of population burden of disease caused by the risk factor ● At individual level ○ Component causes is necessary and the casual pie is sufficient for disease onset ● At population level ○ Necessity and sufficiency and in some instance need to be either ● Multifactorial and complex disease are often caused by many factors ● Identifying factors common to most people ○ Greater impact on reducing disease for largest amount of people