Table 2.

Comparison of the Mean of Arrhythmia Burden Across Periods

		Pre-COVID-19	COVID-19	High-Risk	Low-Risk	F1/U1	p1	F2/χ2	p2
SVT	Frequency	0.0186 ± 0.0126	0.0346 ± 0.0252	0.0759 ± 0.0707	0.0400 ± 0.0330	3.5	0.087	2.2	0.151
	Duration	0.907, 2.1530	1.2022, 3.3688	2.5862, 10.8880	1.3920, 2.2960	18	0.606	1.9	0.380
NSVT	Frequency	0.0109, 0.0164bc	0.0164, 0.0314	0.0172, 0.0475a	0.0240, 0.042a	616	0.082	18	0.000
	Duration	0.0538, 0.1640b	0.0710, 0.1462	0.1982, 0.2845a	0.6080, 0.3680	273	0.580	7.6	0.022
AT	Frequency	0.0164, 0.0219b	0.0219, 0.045	0.0345, 0.0518a	0.0280, 0.0640	1565	0.861	7.3	0.025
	Duration	0.8049, 3.5861	0.6448, 3.2869	2.0345, 8.1379	0.7480, 5.0100	1183	0.901	1.9	0.378
AF	Frequency	0.0164, 0.0186bc	0.0219, 0.0383	0.0345, 0.0432a	0.0280, 0.0640a	1967	0.070	19	0.000
	Duration	11.1667, 503.6311	24.5792, 429.2486	40.7414, 631.0173	34.2560, 529.8260	1125	0.248	2.2	0.329

Notes: F₁/U₁, p₁ compare pre-COVID-19 period with COVID-19 period; F₂/χ², p₂ compared with pre-COVID-19 period, high-risk period and Low-risk period. ^aCompared with the pre-COVID-19 group, and p < 0.05; ^bCompared with the high-risk group, and p < 0.05; ^cCompared with the low-risk group, and p<0.05.

Abbreviations: SVT, sustained ventricular tachycardia; NSVT, nonsustained ventricular tachycardia; AT, atrial tachycardia; AF, atrial fibrillation.