attributable fraction

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Related to attributable fraction: Population Attributable Risk, Attributable risk

attributable fraction

The percentage of instances of an illness that can be accounted for by a particular risk factor. For example, people exposed to asbestos have a certain risk of developing lung cancer, and if they also smoke tobacco, they are also at risk from that factor. These risks may be estimated from cohort studies.
Synonym: additional risk; attributable risk
See also: fraction


size expressed as a relative part of a unit.

attributable fraction
the proportion of disease in the exposed group which is caused by the factor.
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References in periodicals archive ?
Attributable fractions may be lower or higher than those calculated, as there are uncertainties in calculations and competing risk factors that we have not considered when applying risk functions to our specific population (such as environmental tobacco smoke).
93%) are less than global estimates for population attributable fraction (PAF) for mortality due to second-hand smoke exposure (1%)24 and are a fraction of the population attributable fraction for mortality due to smoking estimated for Northern and Interior BC (19%).
This would translate to 34 481 smoking-attributable deaths, if the attributable fractions for adults > 30 years (re-estimated from Sitas et al.
Although there was a significant dose-response relationship between lead exposure and ADHD, we estimated the population attributable fraction only for children who had blood lead levels in the fifth quintiles of blood lead concentration.
Population Attributable Fraction (PAF) Formulae and Derivations Disease + - Exposure + a b - c d The derivations are calculated using relative risk, although odds ratios were substituted for these studies with stable exposure distribution.
The attributable fraction (AF) can be used to inform policies on ELF exposure.
Our sensitivity analysis, in which we also varied the attributable fraction for American sources from 18% (industry data sources) to 36% (federal data sources) (Seigneur et al.
The attributable fraction of disease burden in a population is determined by prevalence of exposure to the risk factor in the population and the relative risk (RR) of disease occurrence given exposure.
Relative risk estimates from published literature were entered into the formulas for attributable fraction given by Rockhill et al.
Risk estimates and exposure frequencies in our studies enable calculation of the attributable fraction, that is, the proportion of cases that can be attributed to the particular exposure.
97), and the attributable fraction for myocardial infarction due to inactivity (less than 4 hours per week of moderate or strenuous activity) was estimated to be 12.
In this pioneering area, they estimated an environmentally attributable fraction (EAF) for each disease by convening a panel of several experts for each disease.