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→Population Attributable Fraction (PAF)
==Air pollution==
*Approx. 6 million deaths are attributable to air pollution in 2019
===Classification of air pollutants===
{|class="wikitable"
*The fraction of all cases of a particular disease or other adverse condition in a population that is attributable to a specific exposure
<math>PAF = \frac{E(RR-1)}{E(RR-1)+1}</math>
where,
*<math>E</math> is proportion of exposed among population
*<math>RR</math> is relative risk of the exposure derived from air pollution mortality function
