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Related Concept Videos

Introduction to Epidemiology01:26

Introduction to Epidemiology

Epidemiology, known as the cornerstone of public health, involves studying the distribution and determinants of health-related events in defined populations and applying these insights to control health issues. This is essential for understanding how diseases spread, identifying populations at greater risk, and implementing measures to control or prevent outbreaks. Epidemiology addresses not only infectious diseases but also non-communicable conditions like cancer and cardiovascular disease,...
Prevalence and Incidence01:08

Prevalence and Incidence

In statistical epidemiology and health sciences, two essential metrics—prevalence and incidence—are fundamental for understanding disease dynamics within a population. These measures enable public health officials, epidemiologists, and researchers to assess the burden of diseases, allocate resources effectively, and design impactful public health policies and interventions.
Prevalence indicates the proportion of individuals in a population who have a specific disease or health condition at a...
Infectious Diseases and Their Occurrence01:28

Infectious Diseases and Their Occurrence

Infectious diseases appear in populations through various transmission patterns, influenced by pathogen characteristics, population immunity, environmental conditions, and social behavior. Understanding these patterns is essential for effective public health surveillance and intervention. These categories—sporadic, outbreak, epidemic, pandemic, and endemic—help frame the nature and scope of disease events.Sporadic diseases occur irregularly and infrequently, without a predictable temporal or...
Factors Affecting the Risk of Infection01:26

Factors Affecting the Risk of Infection

The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases.
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin create...
Causality in Epidemiology01:21

Causality in Epidemiology

Causality or causation is a fundamental concept in epidemiology, vital for understanding the relationships between various factors and health outcomes. Despite its importance, there's no single, universally accepted definition of causality within the discipline. Drawing from a systematic review, causality in epidemiology encompasses several definitions, including production, necessary and sufficient, sufficient-component, counterfactual, and probabilistic models. Each has its strengths and...
Factors Affecting Illness01:18

Factors Affecting Illness

When a person's physical, emotional, intellectual, social development or spiritual functioning is compromised, this deviation from a healthy normal state is called illness. Illness creates stress that in turn harms individuals. Irritation, anger, denial, hopelessness, and fear are behavioral and emotional changes an individual experiences in the phases of illness. A variety of factors influence a person's health and well-being.
For instance, risk factors are connected to illness, disability,...

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Related Experiment Video

Updated: May 20, 2026

Rapid Fractionation and Isolation of Whole Blood Components in Samples Obtained from a Community-based Setting
11:31

Rapid Fractionation and Isolation of Whole Blood Components in Samples Obtained from a Community-based Setting

Published on: November 30, 2015

Epidemiology and risk factors.

Mitchell S V Elkind

    Continuum (Minneapolis, Minn.)
    |July 20, 2012
    PubMed
    Summary

    Stroke remains a significant global health challenge, causing death and disability. Understanding its epidemiology, risk factors like hypertension and diabetes, and triggers is crucial for prevention and management.

    Area of Science:

    • Neurology
    • Epidemiology
    • Public Health

    Background:

    • Stroke is a leading cause of death and disability globally and in the US.
    • Significant disparities exist in stroke incidence and mortality.
    • Silent stroke is an emerging area of concern.

    Purpose of the Study:

    • To present current knowledge on stroke epidemiology.
    • To review recent data on the global burden of stroke.
    • To discuss traditional and novel risk factors, stroke triggers, and their clinical implications.

    Main Methods:

    • Review of large international and US case-control and prospective cohort studies.
    • Analysis of epidemiological data on stroke incidence, mortality, and risk factors.
    • Synthesis of ongoing research on putative stroke risk factors and triggers.

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    Related Experiment Videos

    Last Updated: May 20, 2026

    Rapid Fractionation and Isolation of Whole Blood Components in Samples Obtained from a Community-based Setting
    11:31

    Rapid Fractionation and Isolation of Whole Blood Components in Samples Obtained from a Community-based Setting

    Published on: November 30, 2015

    Implementation of a Real-Time Psychosis Risk Detection and Alerting System Based on Electronic Health Records using CogStack
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    Implementation of a Real-Time Psychosis Risk Detection and Alerting System Based on Electronic Health Records using CogStack

    Published on: May 15, 2020

    Main Results:

    • Stroke is the third leading cause of death and primary cause of disability in the US.
    • Modifiable risk factors include hypertension, atrial fibrillation, hyperlipidemia, diabetes, smoking, inactivity, and obesity.
    • Research is expanding on novel risk factors like inflammation, infection, and mental health conditions.

    Conclusions:

    • Stroke represents a substantial global health burden.
    • While established risk factors are well-known, ongoing research refines our understanding of their distribution and impact.
    • Identifying stroke triggers may offer new avenues for prevention.