Baseline characteristics
A total of 1023 postoperative patients were enrolled, with 716 patients in the training set, 204 patients were in the validation set 1 and 103 patients in the validation set 2. The median follow-up time was 13 months (ranging from 3 to 48 months). During the follow-up period, 179 patients (17.5%) experienced relapse, 37 patients (20.7%) underwent repeated ablation, and 7 patients (0.7%) died of non-cardiac causes. Significant differences in radiomics and clinical features were shown in patients with different types of atrial
fibrillation (Table 1; Supplemental Table 1).
Table 1 Baseline Characteristics.