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date: 08 March 2021

Competing Risk (Syn: competing cause, competing event) 

A Dictionary of Epidemiology

Miquel Porta

An event that removes a subject from being at risk for the outcome under investigation. For example, in a study of smoking and cancer of the lung, a subject who dies of coronary heart disease is no longer at risk of lung cancer; in this situation, coronary heart disease is a competing risk. In considering a particular cause of death (or other inevitable outcome), one must take account of other causes of death, which are commonly called competing risks. When the frequency of previously common causes of death is reduced, competing risks must become more prominent. For instance, among young adults, pneumonia and other infections were a common cause of death until about mid-twentieth century; their control has increased the incidence of some competing risks as myocardial infarction and various cancers.... ...

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