Fig. 4

Heart defect and age distributions of patients. The cohort comprised examined 1,035 patients aged 0 to 5, including 234 (22%) with normal heart structure (NOR), 100 patients (10%) with non-significant right heart disease (RHA), 291 patients (28%) with significant right heart disease (RHB), 141 patients (14%) with non-significant left heart disease (LHA), and 269 patients (26%) with significant left heart disease (LHB). The age distribution was as follows: 0 years old (416 patients; 40.2%), 1 year (249 patients; 24.1%), 2 years (164 patients; 15.8%), 3 years (99 patients; 9.6%), and 4 years (107 patients; 10.3%)