Time at Risk

Time at Risk == Value at Risk
(if we replace value by time)

E.g. An insurance company’s 90% TaR is 3 year for liquidity risk
– That means that for 3 years the insurer under the current financial structure would be 90% safe

Time at Risk (TaR for short): is the maximum period of time that an adverse event would not occur. We calculate it as follows:

Incidence rate formula
Incidence rate = \frac{Number of disease cases in a given time period}{Total person time at risk during study period}

The units are cases/person-year

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