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- W3200776846 abstract "Abstract Background The lung allocation system in the U.S. prioritizes lung transplant candidates based on estimated pre- and post-transplant survival via the Lung Allocation Scores (LAS). However, these models do not account for selection bias, which results from individuals being removed from the waitlist due to receipt of transplant, as well as transplanted individuals necessarily having survived long enough to receive a transplant. Such selection biases lead to inaccurate predictions. Methods We used a weighted estimation strategy to account for selection bias in the pre- and post-transplant models used to calculate the LAS. We then created a modified LAS using these weights, and compared its performance to that of the existing LAS via time-dependent receiver operating characteristic (ROC) curves, calibration curves, and Bland-Altman plots. Results The modified LAS exhibited better discrimination and calibration than the existing LAS, and led to changes in patient prioritization. Conclusions Our approach to addressing selection bias is intuitive and can be applied to any organ allocation system that prioritizes patients based on estimated pre- and post-transplant survival. This work is especially relevant to current efforts to ensure more equitable distribution of organs." @default.
- W3200776846 created "2021-09-27" @default.
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- W3200776846 date "2021-09-21" @default.
- W3200776846 modified "2023-10-07" @default.
- W3200776846 title "Mitigating selection bias in organ allocation models" @default.
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- W3200776846 doi "https://doi.org/10.1186/s12874-021-01379-7" @default.
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