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- W4242184727 abstract "Abstract Background Eide and Gefeller introduced the concepts of sequential and average attributable fractions as methods to partition the risk of disease to differing exposures. In particular, sequential attributable fractions are interpreted in terms of an incremental reduction in disease prevalence associated with removing a particular risk factor from the population, having removed other risk factors. Clearly, both concepts are causal entities, but are not usually estimated within a causal inference framework. Methods We propose causal definitions of sequential and average attributable fractions using the potential outcomes framework. To estimate these quantities in practice, we model exposure-exposure and exposure-disease interrelationships using a causal Bayesian network, assuming no unobserved variables. This allows us to model not only the direct impact of removing a risk factor on disease, but also the indirect impact through the effect on the prevalence of causally downstream risk factors that are typically ignored when calculating sequential and average attributable fractions. The procedure for calculating sequential attributable fractions involves repeated applications of Pearl's do-operator over a fitted Bayesian network, and simulation from the resulting joint probability distributions. Results The methods are applied to the INTERSTROKE study, which was designed to quantify disease burden attributable to the major risk factors for stroke. The resulting sequential and average PAFs are compared to results to a prior approach to estimate sequential PAFs which uses a single logistic model and which does not properly account for differing causal pathways. Conclusions In contrast to estimation using a single regression model, the proposed approaches allow consistent estimation of sequential, joint and average PAF under general causal structures." @default.
- W4242184727 created "2022-05-12" @default.
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- W4242184727 date "2020-05-25" @default.
- W4242184727 modified "2023-10-16" @default.
- W4242184727 title "Revisiting Sequential Attributable fractions" @default.
- W4242184727 doi "https://doi.org/10.21203/rs.2.22051/v2" @default.
- W4242184727 hasPublicationYear "2020" @default.
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