Evaluation of Left Atrial Function in Patients with Paroxysmal Atrial Fibrillation Using Left Atrial Automatic Myocardial Functional Imaging Ultrasonography

Table 5

Kaplan–Meier univariate analysis.

Factors	Classification	Median survival time (days)	Log rank chi-square	value
Therapy method	Radiofrequency ablation	490	9.414	0.002
	Nonradiofrequency ablation	349
Embolism risk	Low risk	434	7.970	0.005
	High risk	310

Low risk, CHA2DS2-VASc scores of <2; High risk, CHA2DS2-VASc scores of ≥2; CHA2DS2-VASc, CHA2DS2-VASc, cardiac failure, high blood pressure, age of 65–74 years (doubled), diabetes mellitus, stroke or temporary ischemic attack (TIA), and sex group (female).