Table 3.
Numbers and Birth Prevalence of Congenital Heart Defects Among 94 228 Births in the DNBC, 1996–2003, and Among 102 985 Births in MoBa, Norway, 2000–2009
| Denmark (n=94 228) | Norway (n=102 985) | |||
|---|---|---|---|---|
| n | n/10 000 | n | n/10 000 | |
| Any heart defect | 1077 | 114 | 1434 | 139 |
| Any heart defect without preterm PDA | 995 | 106 | 1252 | 122 |
| Heterotaxia | 16 | 1.7 | 13 | 1.3 |
| Conotruncal defect | 105 | 11 | 96 | 9.3 |
| AVSD | 34 | 3.6 | 27 | 2.6 |
| APVR | 8 | 0.8 | 12 | 1.2 |
| LVOTO | 96 | 10 | 84 | 8.2 |
| RVOTO | 43 | 4.6 | 48 | 4.7 |
| Septal defect, isolated | 445 | 47 | 746 | 72 |
| VSD | 235 | 25 | 586 | 60 |
| ASD | 141 | 15 | 138 | 13 |
| VSD+ASD | 34 | 3.6 | 12 | 1.2 |
| Unspecified septal defect | 35 | 3.7 | 10 | 1.0 |
| Other complex defects | 1 | 0.1 | 0 | |
| Isolated PDAa | 155 | 16 | 279 | 27 |
| At‐term gestation | 73 | 7.7 | 97 | 9.4 |
| Preterm gestation | 82 | 8.7 | 182 | 18 |
| Other specified defects | 87 | 9.2 | 91 | 8.8 |
| Unspecified cardiac defects | 87 | 9.2 | 38 | 3.7 |
APVR indicates anomalous pulmonary venous return; ASD, atrial septal defect; AVSD, atrioventricular septal defect; DNBC, Danish National Birth Cohort; LVOTO, left ventricle outflow tract obstruction; MoBa, Norwegian Mother and Child Cohort Study; PDA, patent ductus arteriosus; RVOTO, right ventricle outflow tract obstruction; VSD, ventricular septal defect.
a
Isolated PDA in preterm infants (gestational age <37 weeks) was not included in the regression analyses.