Limitations:
Being an administrative database, NRD is subjected to coding errors. pLAAC is an operator-dependent procedure. NRD does not have information regarding the type and size of the device used, echocardiographic findings, pre, and post-procedure imaging results. Patients readmitted to another state cannot be traced in the NRD, and mortality data cannot be calculated outside the hospital after discharge. Despite all the limitations, our analysis results are in accordance with the data reported in previous studies. [9, 10, 19] Because it uses an enormous sample size, it can also provide insights into uncommon risk factors, a limitation of a single-center cohort study.