Number of cases and adjusted relative risk (95% CI) for an increase in pollution from the 10th to the 90th centile by congenital heart disease subgroup, by pollutant
| No. of cases | SO2 | NO2 | PM10 | |
| Anomalies of cardiac chambers | 413 | 0.99 (0.81 to 1.20) | 1.09 (0.73 to 1.64) | 1.08 (0.65 to 1.80) |
| Transposition of great vessels | 251 | 0.94 (0.71 to 1.25) | 1.15 (0.65 to 2.02) | 1.22 (0.59 to 2.49) |
| Malformations of cardiac septa | 596 | 1.03 (0.89 to 1.19) | 0.94 (0.68 to 1.30) | 0.89 (0.59 to 1.37) |
| Atrioventricular septal defects | 109 | 0.98 (0.68 to 1.42) | 0.62 (0.30 to 1.30) | 0.49 (0.19 to 1.27) |
| Tetralogy of Fallot | 146 | 1.38 (1.07 to 1.79) | 1.44 (0.71 to 2.93) | 1.48 (0.57 to 3.84) |
| Malformations of valves | 802 | 1.02 (0.90 to 1.16) | 0.95 (0.71 to 1.26) | 0.89 (0.61 to 1.30) |
| Hypoplastic left heart syndrome | 180 | 1.07 (0.80 to 1.44) | 1.50 (0.77 to 2.89) | 1.22 (0.56 to 2.68) |
| Great arteries and veins | 580 | 0.98 (0.83 to 1.15) | 0.96 (0.69 to 1.35) | 0.82 (0.53 to 1.27) |
| Coarctation of aorta | 176 | 1.15 (0.90 to 1.47) | 1.41 (0.76 to 2.62) | 1.09 (0.48 to 2.46) |