Table 2. Prevalence of current asthma, allergic asthma (sensitized to ≥1 aero-allergen), allergic rhinitis (sensitized to ≥1 aero-allergen) and allergic sensitization (≥1 aero-allergen >0.35 kU/L) at last follow-up assessment between 6 to 10 years in 11 European birth cohorts.
| Birth cohort, country (sorted from north to south) | Age of children at follow-up (years) | Follow-up rate | Asthma | Allergic asthma | Allergic rhinitis | Allergic sensitisation |
| % | % | % | % | |||
| (n/N) | (n/N) | (n/N) | (n/N) | |||
| ECA | 10 | 84% | 11.9 | 7.6 | 13.9 | 33.2 |
| Norway | (120/1010) | (73/963) | (135/972) | (325/979) | ||
| BAMSE | 8–9 | 84% | 9.3 | 5.2 | 8.0 | 26.0 |
| Sweden | (308/3330) | (165/3187) | (255/3202) | (637/2451) | ||
| DARC | 6 | 81% | 7.7 | 4.31 | 4.11 | 35.91 |
| Denmark | (35/457) | (19/441) | (18/441) | (168/468) | ||
| Leicester 1998 | 6 | 57% | 18.7 | n.a. | n.a. | n.a. |
| UK | (66/353) | |||||
| Isle of Wight | 10 | 94% | 16.3 | 8.8 | 11.9 | 33.0 |
| UK | (223/1370) | (110/1257) | (142/1196) | (314/952) | ||
| PIAMA-NHS | 8 | 83% | 7.1 | 2.7 | 5.5 | 29.7 |
| The Netherlands | (194/2720) | (70/2596) | (131/2374) | (383/1289) | ||
| MAS | 10 | 58% | 11.2 | 9.1 | 20.0 | 48.1 |
| Germany | (68/606) | (54/592) | (147/735) | (343/713) | ||
| LISA | 6 | 71% | 3.0 | 1.2 | 5.5 | 26.7 |
| Germany | (66/2185) | (25/2144) | (109/1988) | (318/1193) | ||
| GINI-B | 6 | 59% | 2.9 | 1.3 | 4.5 | 27.2 |
| Germany | (64/2179) | (28/2143) | (90/2020) | (257/945) | ||
| AMICS-Barcelona | 6 | 64% | 12.5 | 3.91 | 5.81 | 18.91 |
| Spain | (39/312) | (11/284) | (15/259) | (54/286) | ||
| AMICS-Menorca | 6 | 94% | 7.9 | 3.01 | 0.51 | 12.31 |
| Spain | (36/458) | (13/435) | (2/438) | (43/349) | ||
| Total | 8.1 | 4.0 | 7.7 | 29.5 | ||
| (1219/14980) | (568/14042) | (1044/13625) | (2842/9625) |
n.a. = not assessed.
1
in DARC, AMICS-Barcelona and AMICS-Menorca, sensitization data were only available for the age of 4 years.