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. 2026 Feb 25;14:1776878. doi: 10.3389/fpubh.2026.1776878

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Copyright © 2026 Shao, Shu, Wang, Yu, Zhou and Han.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Calibration plot displaying observed thirty-day readmission rate versus predicted probability. Black dots represent data points connected by a solid line. The dashed diagonal line indicates ideal model calibration. Axes are labeled accordingly. — Calibration plot comparing predicted vs. observed 30-day readmission risk.