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. 2023 Oct 31;16:4919–4930. doi: 10.2147/IJGM.S435901

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© 2023 Thanh et al.

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ROC curves for predicting atrial fibrillation at 3 months (A) and 6 months (B) postoperatively. ROC: Receiver operator characteristic. The significance of reduced HRV measurement in explaining postoperative AF was evaluated by ROC (receiver operating characteristic (ROC) curves with determination of the areas under the curves. A statistic of 0.5 represents poor predictive ability; a values of 0.60 indicate good predictive ability; a value of 0.8–0,9 shows and very good prediction and perfect ability; a value of 1.0.

Abbreviations: AUC, area under curve; CI, confidence interval.