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  2. Prevalence - Wikipedia

    en.wikipedia.org/wiki/Prevalence

    Prevalence is a term that means being widespread and it is distinct from incidence. Prevalence is a measurement of all individuals affected by the disease at a particular time, whereas incidence is a measurement of the number of new individuals who contract a disease during a

  3. Positive and negative predictive values - Wikipedia

    en.wikipedia.org/wiki/Positive_and_negative...

    Note that the PPV is not intrinsic to the test—it depends also on the prevalence. [2] Due to the large effect of prevalence upon predictive values, a standardized approach has been proposed, where the PPV is normalized to a prevalence of 50%. [11] PPV is directly proportional [dubious – discuss] to the prevalence of the disease or condition ...

  4. Incidence (epidemiology) - Wikipedia

    en.wikipedia.org/wiki/Incidence_(epidemiology)

    Incidence is usually more useful than prevalence in understanding the disease etiology: for example, if the incidence rate of a disease in a population increases, then there is a risk factor that promotes the incidence. For example, consider a disease that takes a long time to cure and was widespread in 2002 but dissipated in 2003.

  5. Epidemiology - Wikipedia

    en.wikipedia.org/wiki/Epidemiology

    Epidemiology has its limits at the point where an inference is made that the relationship between an agent and a disease is causal (general causation) and where the magnitude of excess risk attributed to the agent has been determined; that is, epidemiology addresses whether an agent can cause disease, not whether an agent did cause a specific ...

  6. List of epidemics and pandemics - Wikipedia

    en.wikipedia.org/wiki/List_of_epidemics_and...

    There have been various major infectious diseases with high prevalence worldwide, but they are currently not listed in the above table as epidemics/pandemics due to the lack of definite data, such as time span and death toll. An Ethiopian child with malaria, a disease with an annual death rate of 619,000 as of 2021. [18]

  7. Disease burden - Wikipedia

    en.wikipedia.org/wiki/Disease_burden

    Burden of all infectious diseases, worldwide in 2004, measured in disability-adjusted life years Burden of non-communicable diseases, worldwide in 2004, measured in disability-adjusted life years. Disease burden is the impact of a health problem as measured by financial cost, mortality, morbidity, or other indicators.

  8. This disease kills more people than all cancers and accidents ...

    www.aol.com/news/disease-kills-more-people...

    The report also detailed the prevalence of specific risk factors for heart disease. More than 72% of U.S. adults have "unhealthy weight," which is defined as a body mass index of at least 25, the ...

  9. Epidemic - Wikipedia

    en.wikipedia.org/wiki/Epidemic

    The Plague of Athens (c. 1652 –1654) by Michiel Sweerts, illustrating the devastating epidemic that struck Athens in 430 BC, as described by the historian Thucydides. The United States Centers for Disease Control and Prevention defines epidemic broadly: "Epidemic refers to an increase, often sudden, in the number of cases of a disease above what is normally expected in that population in ...