Distribution of asthma, eczema and rhinitis across males and females and across birth cohort
| Cohort | Asthma | Eczema | Rhinitis | |||
| Males | Females | Males | Females | Males | Females | |
| Subjects n | 8807 | 9135 | 8781 | 9152 | 8665 | 9035 |
| 1986–1989 | 6.5 | 4.0 | 16.4 | 14.8 | 6.6 | 4.5 |
| 1990–1992 | 8.9 | 7.3 | 17.1 | 16.7 | 5.3 | 3.4 |
| 1993–1995 | 12.9 | 8.0 | 18.6 | 15.4 | 5.9 | 3.6 |
| 1996–1998 | 11.7 | 9.0 | 18.5 | 16.6 | 4.5 | 3.7 |
| Total | 10.2 | 7.2 | 17.7 | 15.9 | 5.6 | 3.8 |
Data are presented as %, unless otherwise stated.