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Issues with incorrect computing of population attributable fraction (PAF) in a global perspective on coal-fired power
Ahmad Khosravi1, Mohammad Ali Mansournia2
1Department of Epidemiology, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran.
Abstract:
All observational studies are liable to confounding and Levin's formula becomes useless in practice for unbiasedly estimating PAF. With respect to causal interpretation of PAF in public health setting, unbiased estimation of PAF requires several assumptions which are ignored in practice. We recommend using Miettinen PAF formula with careful consideration about possibility of bias in study design and analysis.
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