TABLE 3.

The calculated net reclassification index (NRI) in the development cohort and validation cohort.

Group	Estimate	Lower (95% CI)	Upper (95% CI)
Development cohort
NRI	0.085	−0.059	0.175
NRI+	0.042	−0.063	0.106
NRI-	0.043	−0.036	0.096
Validation cohort
NRI	−0.089	−0.169	0.160
NRI+	0	−0.121	0.160
NRI-	−0.089	−0.121	0.097

NRI, net reclassification index; CI, confidence interval. NRI+ means to calculate NRI in the AF recurrence patients. NRI- means to calculate NRI in the without AF recurrence patients.