Table 3. Congenital heart disease subtypes.

CHD subtypes	N
Severe CHD a	35
Non-severe CHD	92
Any septal defect	82
Atrial septal defect	20
Conotruncal b	6
Isolated CHD c	110
CHD with other CAs d	17
CHD associated with syndrome e	13
Any CHD	127

Abbreviations: CHD, congenital heart disease; CA, congenital anomaly.

^a According to EUROCAT. See supplementary table X for ICD codes.

^b Tetralogy of Fallot, transposition of great arteries, truncus arteriosus, double outlet right ventricle.

^c Those diagnosed with a CHD (or multiple CHDs) and no other congenital anomalies

^d CHDs cooccurring with other congenital anomalies.

^e CHDs diagnosed with other syndromes (see ‘probable cause’) in Table 2 above.