Table 3.

Difference in area under the ROC curve (AUC) in relation to atrial fibrillation with Framingham score variables alone versus addition of P‐wave indices for 5 and 15 years of follow‐up

P‐wave indices	Years since electrocardiography	AUC (CI)	Delta AUC (CI)	p
Framingham variables alone	5	78.0 [70.2;85.8]
P‐wave area/P‐wave duration index, lead II	5	78.6 [70.4;86.9]	0.6 [−8.2;9.4]	.89
P‐wave area, lead II	5	78.1 [70.4;85.8]	0.1 [−7.4;7.6]	.98
P‐wave duration, lead II	5	77.6 [68.1;87.1]	−0.4 [−3.5;2.7]	.80
P‐wave terminal force, lead V1	5	77.7 [69.4;86.0]	−0.3 [−2.4;1.8]	.78
Framingham variables alone	15	53.5 [29.1;77.9]
P‐wave area/P‐wave duration index, lead II	15	62.0 [33.6;90.3]	8.5 [0.6;16.3]	.034
P‐wave area, lead II	15	59.1 [32.3;85.9]	5.6 [−0.6;11.8]	.076
P‐wave duration, lead II	15	54.8 [29.7;79.8]	1.3 [−1.7;4.3]	.41
P‐wave terminal force, lead V1	15	54.4 [29.6;79.2]	0.9 [−0.9;2.8]	.33

Area under the ROC curve for P‐wave area/P‐wave duration index and other PWI when added to Framingham score variables.