Table 4.

AF duration‐based analysis

	Total
Cumulative duration of Holter‐ECG recordings (h)	3913
Duration of AF in Holter findings (h)	401
AF‐free time in Holter findings (h)	3512
AF detected by ICM (h)	402
True positive (TP) time period (h)	376
False positive (FP) time period (h)	27
False negative (FN) time period (h)	25
True negative (TN) time period (h)	3485
Sensitivity = TP/(TP+FN)	93.6%
Specificity = TN/(TN+FP)	99.2%
Positive predictive value = TP/(TP+FP)	93.4%
Negative predictive value = TN/(TN+FN)	99.3%
Accuracy = (TP+TN)/(TP+TN+FP+FN)	98.7%

Note. The analysis included 82 patients with adjudicated Holter findings and ICM data (see Appendix 1 for details).

Abbreviations: AF = atrial fibrillation; ECG = electrocardiogram; ICM = insertable cardiac monitor.