Prevalence: Refers to the proportion of

Prevalence refers to the proportion of individuals in a population who have a specific condition or characteristic at a given time. Introduction to Prevalence Prevalence is a fundamental concept in epidemiology, the study of the distribution and determinants of health-related events, diseases, or health-related characteristics among populations. It is a measure used to describe the extent of a particular health issue or disease within a population at a given time or over a specified period. Understanding prevalence is crucial for public health research, policy-making, and the allocation of healthcare resources ... Prevalence is the proportion of individuals who have the disease at a given time. It is used to quantify the burden of disease in a population. Understanding what is going on in society at a certain point in time can help us plan a policy change and create the right health service. How to calculate prevalence ? Prevalence is defined as the number of observation units in a population presenting specific conditions or characteristics at a particular point in time divided by the total number of observation units in the population at that time.