Fig. 5From: Global prevalence of congenital heart disease in school-age children: a meta-analysis and systematic reviewThe changes in unrepaired CHD prevalence among school children in 4 geographic regions. The number of studies for each region was: Africa 10 (920,691 children), Asia 27 (1,538,294 children), Europe 2 (55,985 children), North America 2 (122,482 children). One study conducted in South America comprising just 1023 children, is not shown in the figure.Back to article page