Prevalence (%) of respiratory symptoms, stratified for ethnicity of the child
| Dutch | Indonesian | Antillean | Surinamese | Turkish | North African | Eastern European | Other | |
|---|---|---|---|---|---|---|---|---|
| Symptoms 0–1 year | n=3365 | n=10 | n=16 | n=28 | n=21 | n=13 | n=9 | n=21 |
| Wheeze at least once | 26 | 10 | 25 | 29 | 38 | 38 | 22 | 10 |
| Recurrent wheezing | 7 | 0 | 6 | 11 | 9 | 18 | 0 | 0 |
| Night cough without a cold | 18 | 9 | 0 | 25 | 48 | 17 | 0 | 14 |
| Runny nose without a cold | 31 | 18 | 27 | 50 | 57 | 31 | 11 | 24 |
| Runny nose with itchy/watery eyes | 5 | 0 | 0 | 14 | 29 | 15 | 0 | 5 |
| Symptoms 1–2 years | n=3467 | n=11 | n=17 | n=30 | n=23 | n=14 | n=10 | n=26 |
| Wheeze at least once | 18 | 27 | 12 | 27 | 48 | 21 | 10 | 27 |
| Recurrent wheezing | 6 | 0 | 0 | 10 | 4 | 7 | 0 | 19 |
| Night cough without a cold | 15 | 18 | 18 | 27 | 39 | 36 | 0 | 20 |
| Runny nose without a cold | 21 | 0 | 23 | 43 | 48 | 42 | 0 | 42 |
| Runny nose with itchy/watery eyes | 4 | 0 | 18 | 7 | 30 | 29 | 0 | 8 |