Fig. 6From: Global prevalence of congenital heart disease in school-age children: a meta-analysis and systematic reviewThe prevalence of CHD diagnoses in childhood for countries of different income levels and geographic regions. a prevalence difference between income levels across the study period. Data in a are presented as Mean + SE. *P < 0.05. b The prevalence of CHDs diagnosed in childhood from 1970–2014. Thin lines represent 95% CIs. P value for trend analysis is 0.040Back to article page