Fig. 3From: Early changes in ambulatory electrocardiography after transcatheter closure in patients with atrial septal defect and factors affecting heart rate variabilityRelationship between right ventricular systolic pressure and HRV. Linear regression and Pearson’s correlation analyses showing the relationship of right ventricular systolic pressure (sRVP) with SDNN and SDANN. R, Pearson’s correlation coefficient. Significance levels: NS, no significance; *p < 0.05, **p < 0.01, ***p < 0.001Back to article page