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. 2021 Jan 15;11:598740. doi: 10.3389/fneur.2020.598740

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Copyright © 2021 Zhu, Li, Tian, Zhang, Zhang, Wang, Zhang, Yang and Liu.

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 curves of the nomogram model with derivation (A) and validation (B) cohorts, respectively. Calibration curves depict the calibration of predictive model in terms of the agreement between the predicted risk of aneurysm instability and observed actual status of aneurysm stability. The y axis represents the actual status of aneurysm stability. The x axis represents the predicted probability of instability. The diagonal dotted line represents a perfect prediction by an ideal model. The blue solid line represents the performance of the nomogram, of which a closer fit to the diagonal line represents a better prediction.