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.