Change in prevalence (%) of atopy
| Allergen | 1982 % (n = 769) | 1992 % (n = 850) | 1997 % (n = 962) | Percent increase (95% CI) | |||||
|---|---|---|---|---|---|---|---|---|---|
| 1982–92 | 1992–97 | 1982–97 | |||||||
| At least one of D farinae, cat, rye grass, plantain,Alternaria | 30.3 | 34.8 | 2-150 | 4.5 (−0.0 to 9.1) | 2-150 | 2-150 | |||
| At least one of D pteronyssinus, rye grass,Alternaria | 2-150 | 38.7 | 45.4 | 2-150 | 6.7 (2.2 to 11.2) | 2-150 | |||
| D pteronyssinus | 2-150 | 18.6 | 30.3 | 2-150 | 11.7 (7.7 to 15.6) | 2-150 | |||
| Rye grass | 22.0 | 23.8 | 28.8 | 0.8 (−3.2 to 4.9) | 6.0 (2.0 to 10.0) | 6.8 (2.7 to 10.9) | |||
| Alternaria | 13.0 | 15.4 | 20.4 | 2.4 (−1.0 to 5.8) | 5.0 (1.4 to 8.5) | 7.4 (3.9 to 10.9) | |||
↵2-150 No value because the concentration or source of allergens were not the same between studies.