Prevalence of asthma, asthma symptoms, and other allergic disorders in our study compared with other studies
| Symptoms | Our study (6–7 years) (n = 3000) | National survey | Italy (6–7 years)26 (n = 18737) | Singapore (6–7 years)27 (n = 2012) | |||||
|---|---|---|---|---|---|---|---|---|---|
| 1992 (5–7 years)1 (n = 2067) | 1995 (12–14 years)2 (n = 5719) | 1999 (12–14 years)3 (n = 3709) | |||||||
| Ever wheezed | 29.6 | 24.44-165 | 49.94-165 | 24.04-165 | 28.6 | ||||
| Current wheeze | 18.0 | 16.7 | 34.14-165 | 7.74-165 | 16.5 | ||||
| Exercise induced wheezing | 13.0 | 9.84-165 | 28.74-165 | 1.74-165 | 8.44-165 | ||||
| Current night time cough | 27.7 | 16.44-165 | 31.84-165 | 18.04-165 | 14.94-165 | ||||
| Ever had asthma | 22.7 | 12.84-165 | 20.34-165 | 9.04-165 | 18.54-165 | ||||
| Current number of wheezing episodes | |||||||||
| 1-3 | 10.8 | 8.2 | 4.6 | ||||||
| 4-12 | 5.1 | 5.2 | 9.3 | 1.1 | |||||
| > 12 | 1.8 | 2.5 | 0.4 | ||||||
| Woken by wheeze past year | |||||||||
| < 1 per week | 7.4 | 1.5 | |||||||
| ⩾ 1 per week | 5.7 | 6.1 | 4.0 | 0.6 | |||||
| Current limitation of speech | 3.5 | 3.2 | 8.7 | 1.1 | 9.2 | ||||
| Ever having eczema | 27.8 | 24.14-165 | 3.04-165 | ||||||
| Current severe flexural rash | 6.2 | 2.84-165 | 8.84-165 | ||||||
| Current chronic rash | 15.7 | 18.74-165 | 6.14-165 | ||||||
| Ever having hay fever | 10.1 | 33.14-165 | 6.34-165 | ||||||
| Current rhinitis | 20.5 | 19.4 | 27.64-165 | ||||||
↵4-165 p < 0.001, significant differences between our study and other studies.