Behaviour problems in adolescents with cardiac disease: an exploratory study in a paediatric cardiology outpatient clinic.

Aims: To assess behavioural problems in adolescents with congenital and acquired heart disease in comparison with healthy controls. The perception of behavioural problems by the patients' parents was also assessed and compared.

Methods: A cross-sectional study was carried out in 130 adolescents with congenital and acquired heart disease and 246 healthy controls.