Fig. 5

Receiver operating characteristic (ROC) curves of differentiators for differential diagnosis in the heterogeneous population. a ROC analysis to differentiate lone AF from healthy controls; b ROC analysis to differentiate isolated HTN group and HTN with PAF group; c ROC analysis to differentiate between lone AF group and HTN with PAF group. AF, atrial fibrillation; cond, atrial conduit phase; HTN, hypertension; LAVI, left atrial volume index; PAF, paroxysmal atrial fibrillation; PALS, peak atrial longitudinal strain; PALSR, peak atrial longitudinal strain rate; pump, atrial booster pump phase; TpS-SD%, the standard deviation of time to peak atrial longitudinal strain corrected by RR interval