Data are used to perform routine surveillance of congenital anomalies which includes:
- Calculation of the prevalence of 92 subgroups of congenital anomalies, updated twice a year on the EUROCAT website.
- Annual statistical monitoring to identify and investigate clusters and time trends in order to detect any previously unrecognised increases in frequency of congenital anomalies which may be associated with exposure to teratogenic factors (e.g. drugs, infections, environmental chemical pollutants, etc.), and that might require public health action.
In addition the data are used to evaluate several public health indicators, which summarise important aspects of public health impact of congenital anomalies and allow comparing performance across population groups or geographic areas.