Prevalence of asthma and allergies among German children living in three different areas: 1992–2001
| 1992/3 n (%) | 1993/4 n (%) | 1994/5 n (%) | 1996/7 n (%) | 1998/9 n (%) | 2000/1 n (%) | Time trends | ||
|---|---|---|---|---|---|---|---|---|
| Crude OR per year(95% CI) | Adjusted* OR per year(95% CI) | |||||||
| *Adjusted for sex, family history of atopic diseases, socioeconomic status, breast feeding, passive smoking, number of siblings, place of living, dampness. | ||||||||
| †SX1: specific IgE against a panel of aeroallergens (mixed grass pollen, birch pollen, mugwort pollen, Dermatophagoides pteronyssinus, cat dander, dog dander, Cladosporiumherbarum). | ||||||||
| Questionnaire | N = 761 | N = 731 | N = 670 | N = 717 | N = 739 | N = 772 | ||
| Diagnoses | ||||||||
| Asthma | 37 (4.9%) | 35 (4.8%) | 20 (3.0%) | 31 (4.3%) | 30 (4.1%) | 43 (5.6%) | 1.02 (0.97 to 1.07) | 1.00 (0.95 to 1.06) |
| Hay fever | 58 (7.6%) | 47 (6.4%) | 52 (7.8%) | 58 (8.1%) | 62 (8.4%) | 70 (9.1%) | 1.03 (0.995 to 1.07) | 1.02 (0.97 to 1.06) |
| Symptoms | ||||||||
| Wheeze ever | 233 (30.6%) | 228 (31.2%) | 205 (30.6%) | 201 (28.0%) | 205 (27.7%) | 240 (31.1%) | 0.97 (0.94 to 0.99) | 0.95 (0.93 to 0.98) |
| Wheeze in past 12 months | 72 (9.5%) | 80 (10.9%) | 58 (8.7%) | 68 (9.5%) | 73 (9.9%) | 81 (10.5%) | 1.00 (0.97 to 1.03) | 0.99 (0.95 to 1.03) |
| Runny nose/itchy eyes | 70 (9.2%) | 69 (9.4%) | 70 (10.4%) | 59 (8.2%) | 58 (7.8%) | 79 (10.2%) | 1.00 (0.96 to 1.03) | 0.98 (0.94 to 1.02) |
| Serum analyses | N = 649 | N = 606 | N = 600 | N = 497 | N = 552 | N = 479 | ||
| Specific IgE (SX1)† | 221 (34.1%) | 181 (29.9%) | 218 (36.3%) | 181 (36.4%) | 197 (35.7%) | 166 (34.7%) | 1.02 (0.99 to 1.04) | 0.99 (0.97 to 1.02) |