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. 2026 Jul 1;17:1877295. doi: 10.3389/fendo.2026.1877295

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Copyright © 2026 Zeng, Ma and Yang.

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 comparing actual probability versus predicted probability with three lines: solid for apparent, dashed for bias-corrected, dotted for ideal, plus confidence intervals; legend included, axes labeled, probability scale ranges zero to one. — Calibration curve of the prediction model.