Fig. 2From: Early changes in ambulatory electrocardiography after transcatheter closure in patients with atrial septal defect and factors affecting heart rate variabilityFactors affecting HRV in patients with ASD. Comparison of SDNN and SDANN between different sexes. Linear regression and Pearson’s correlation analyses showing the relationship of age, defect diameter and mean heart rate with SDNN and SDANN. Comparison of SDNN and SDANN between diabetic and nondiabetic patients. R, Pearson’s correlation coefficient. Significance levels: NS, no significance; *p < 0.05, **p < 0.01, ***p < 0.001Back to article page