Survival curves for the subgroups within the associated pulmonary arterial hypertension (APAH) group from the UK pulmonary hypertension service. The number in each group (brackets) and the predicted survival out of a possible 5 years is depicted. Note the worse survival for children with post operative congenital heart disease.
From Haworth SG, Hislop AA. Treatment and survival in children with pulmonary arterial hypertension: the UK Pulmonary Hypertension Service for Children 2001–2006. Heart 2009;95(4):312–7; with permission.