Study limitations
Some limitations should be considered in our study. First, this study is a retrospective, observational and non-randomized single-center study. Being a retrospective study is a shortcoming in and of itself. Secondly, the training sets and validation sets were from the same medical center, limiting the generalizability of this study’s findings. A large-scale multicenter study was also needed to validate the model. Thirdly, although patients who had CIED can appropriately assess the AFLAT recurrence, rhythm follow-up after CBA mainly relies on 24-h Holter ECG, 12-lead ECG, or patient’s symptoms.