Changes

A multi-attribute quantity expressing hazard, danger Risk relates to the probability or chance that an outcome (e.g. lung cancer) will occur during a given length of harmful or injurious consequences associated with actual or potential exposurestime. It relates Terms relating to quantities such as risk are listed below: Absolute risk: the probability that a particular adverse event (e.g. the incidence of a particular disease or death) will occur in a specific deleterious consequences may arise period. [[Lag]]: for diseases such as cancer, there is a minimum latent period (latency) between an exposure and the magnitude clinical manifestation of a consequent excess risk of the disease during which no cases attributable to the exposure occur. Therefore, a lag is often introduced in an assessment such that no cases occurring within the minimum latent period following an exposure are included in the assessment. Further, if an exposure is protracted, such as occupational exposures to radiation, exposures are usually lagged so that doses received during the minimum latent period immediately preceding the time at which an assessment is conducted are excluded from the assessment. Examples of minimum latent periods are 2 years for leukaemia, and character 5 or 10 years for lung cancer. Lifetime risk: the risk over the lifetime of a particular individual of mortality or morbidity from a particular adverse event (e.g. lung cancer) that is related to a given factor (e.g. an exposure to radiation). The lifetime risk is expressed in terms of the length of life expected for a particular individual, such consequencesas the risk over the remaining lifetime of a specific disease following a particular dose of radiation at a given age at exposure, assuming an overall lifespan of 90 years.