Question | Total participants at survey I | Prevalence at survey I | Participants included in analysis | Prevalence at survey I |
Wheeze | 19953 | 3986 (20.0) | 9540 | 1786 (18.7) |
Wheeze with breathlessness | 19904 | 1869 (9.4) | 9489 | 820 (8.6) |
Wheeze without a cold | 19869 | 2298 (11.6) | 9450 | 990 (10.5) |
Shortness of breath following strenuous activity | 19925 | 4410 (22.1) | 9517 | 1985 (20.9) |
Woken with shortness of breath | 19950 | 1081 (5.4) | 9536 | 447 (4.7) |
Ever had asthma | 19944 | 1652 (8.3) | 9540 | 746 (7.8) |
Doctor-diagnosed asthma | 19921 | 1451 (7.3) | 9517 | 656 (6.9) |
Attack of asthma in last 12 months | 19930 | 692 (3.5) | 9523 | 316 (3.3) |
Current medication | 19899 | 520 (2.6) | 9440 | 199 (2.1) |
Current asthma# | 19891 | 776 (3.9) | 9510 | 345 (3.6) |
Ever-asthma, wheeze, shortness of breath following strenuous activity or waking with shortness of breath¶ | 19912 | 7304 (36.7) | 9503 | 3340+ (35.1) |