Question

The epidemiologists generally expresses diseases magnitude as

Answer 1

Measures of disease frequency and disease burden

Introduction



Learning objectives:

You will learn about commonly used epidemiological measurements to describe the occurrence of disease. This section covers:

Measures of disease frequency including:

a) Prevalence
b) Incidence
c) Calculation of person-time at risk
d) Issues in defining the population at risk
e) The relationships between incidence and prevalence
f) Commonly used measures of disease frequency

Measures of effect including:

g) Main measures of effect
h) Interpreting measures of effect

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.

Please now read the resource text below.

Resource text

A principal role of epidemiology is to describe and explain differences in the distribution of disease or other health outcomes of interest between populations.

Examples of health outcomes measured in epidemiological studies include:

1. Morbidity

2. Mortality

3. Infectious disease incidence

4. Birth defects

5. Disability

6. Injuries

7. Vaccine efficacy

8. Utilization of hospital services

Measures of disease frequency are used to describe how common an illness (or other health event) is with reference to the size of the population (the population at risk) and a measure of time.

Answer 2

Answer:

Epidemiology is the branch of medical science that investigates all the factors that determine the presence or absence of diseases and disorders. ... Also, many epidemiological estimates try to determine how the number of people affected by a disorder changes over time.