Attributable Risk

HISTORY

See risk.

MATHEMATICAL ASPECTS

By definition we have:

$$ \begin{aligned} \text{attributable risk} = \text{risk for those exposed}\\ - \text{risk for those not exposed}\:. \end{aligned} $$

DOMAINS AND LIMITATIONS

The confidence interval of an attributable risk is equivalent to the confidence interval of the difference between the proportions ${ p_{\text{E}} }$ and ${ p_{\text{NE}} }$, where ${ p_{\text{E}} }$ and ${ p_{\text{NE}} }$ represent the risks encountered by individuals exposed and not exposed to the studied factor, respectively. Take ${ n_{\text{E}} }$ and n _NE to be, respectively, the size of the exposed and nonexposed populations. Then,...