| Asthma at the age of 8 | | | | |
| Yes | 12.4 (362) | 8.8 (131) | 14.9 (172) | 22.2 (59) |
| No | 87.6 (2555) | 91.2 (1364) | 85.1 (984) | 77.8 (207) |
| Wheeze (⩾1 episode in previous 12 months) | | | | |
| Yes | 6.2 (182) | 4.1 (61) | 7.9 (91) | 11.3 (30) |
| No | 93.8 (2735) | 95.9 (1434) | 92.1 (1065) | 88.7 (236) |
| Dyspnoea (⩾1 episode in previous 12 months) | | | | |
| Yes | 8.4 (246) | 6.0 (89) | 9.9 (114) | 16.2 (43) |
| No | 91.6 (2671) | 94.0 (1406) | 90.1 (1042) | 83.8 (223) |
| Prescription of inhaled steroid (in previous 12 months) | | | | |
| Yes | 6.3 (184) | 4.6 (68) | 7.6 (88) | 10.5 (28) |
| No | 93.7 (2733) | 95.4 (1427) | 92.4 (1068) | 89.5 (238) |
| Any specific IgE positive | | | | |
| Yes | 40.9 (595) | 34.6 (225) | 44.1 (279) | 53.5 (91) |
| No | 59.1 (859) | 65.4 (426) | 55.9 (354) | 46.5 (79) |