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- W4387157096 abstract "Abstract Background Gravity models are often hard to apply in practice due to their data-hungry nature. Standard implementations of gravity models require that data on each variable is available for each supply node. Since these model types are often applied in a competitive context, data availability of specific variables is commonly limited to a subset of supply nodes. Methods This paper introduces a methodology that accommodates the use of variables for which data availability is incomplete, developed for a health care context, but more broadly applicable. The study uses simulated data to evaluate the performance of the proposed methodology in comparison with a conventional approach of dropping variables from the model. Results It is shown that the proposed methodology is able to improve overall model accuracy compared to dropping variables from the model, and that model accuracy is considerably improved within the subset of supply nodes for which data is available, even when that availability is sparse. Conclusion The proposed methodology is a viable approach to improve the performance of gravity models in a competitive health care context, where data availability is limited, and especially where a the supply nodes with complete data are most relevant for the practitioner." @default.
- W4387157096 created "2023-09-30" @default.
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- W4387157096 date "2023-09-29" @default.
- W4387157096 modified "2023-10-09" @default.
- W4387157096 title "Simulation analysis of an adjusted gravity model for hospital admissions robust to incomplete data" @default.
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- W4387157096 doi "https://doi.org/10.1186/s12874-023-02033-0" @default.
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