Number of infants per centre, participation rate and prevalence (%) of the different variables related to wheezing during the first year of life (n=30 093)
| N | Response rate (%) | One or more wheezing episodes | Recurrent wheezing (≥3 episodes) | Wheezing during first 3 months | Physician- diagnosed asthma | Parental asthma | Severe wheezing episode | Visit to ED due to wheezing | Hospital admission due to wheezing | |
| Chile | ||||||||||
| Santiago | 2988 | 87 | 60.80 | 22.00 | 25.40 | 2.9 | 9.5 | 23.20 | 30.40 | 8.40 |
| Valdivia | 3075 | 89 | 54.40 | 21.10 | 20.60 | 2.7 | 14.8 | 23.30 | 31.30 | 12.10 |
| Brazil | ||||||||||
| Fortaleza | 1209 | 90 | 45.20 | 22.10 | 18.80 | 5.2 | – | 21.90 | 27.90 | 8.40 |
| Recife | 1063 | 89 | 43.00 | 25.00 | 16.40 | 9.2 | – | 24.60 | 35.10 | 9.00 |
| Belo Horizonte | 2532 | 87 | 50.40 | 27.50 | 17.20 | 11.8 | 34.2 | 27.40 | 35.70 | 15.80 |
| Belem | 3029 | 88 | 46.10 | 21.90 | 19.30 | 10.1 | 13.1 | 21.20 | 29.20 | 8.10 |
| Porto Alegre | 1016 | 85 | 63.60 | 36.30 | 23.90 | 22.4 | 25.3 | 36.60 | 45.00 | 17.60 |
| Sao Paulo | 1012 | 89 | 46.00 | 26.70 | 17.40 | 3.5 | 8.2 | 22.40 | 29.40 | 9.10 |
| Curitiba | 3003 | 90 | 45.40 | 22.60 | 13.60 | 4.9 | 17.7 | 20.90 | 26.00 | 5.70 |
| Colombia | ||||||||||
| Barranquilla | 1688 | 85 | 46.70 | 15.90 | 21.50 | 10.2 | 16.6 | 33.30 | 36.00 | 18.00 |
| Mexico | ||||||||||
| Merida | 1406 | 91 | 12.50 | 2.30 | 1.00 | 6.4 | 18.3 | 1.50 | 0.90 | 1.10 |
| Venezuela | ||||||||||
| Caracas | 3009 | 90 | 41.20 | 17.50 | 15.80 | 23.5 | 30.2 | 27.20 | 26.80 | 12.30 |
| Latin America total, mean (95% CI) | 25030 | 88.3 (87.1 to 89.6) | 47.30 (46.7 to 48.0) | 21.4 (20.9 to 21.9) | 17.90 (17.5 to 18.4) | 9.20 (8.9 to 9.6) | 18.1 (17.6 to 18.6) | 23.60 (23.1 to 24.1) | 29.30 (28.7 to 29.9) | 10.40 (10.0 to 11.0) |
| Spain | ||||||||||
| Bilbao | 996 | 70 | 38.90 | 18.60 | 8.50 | 5.6 | 9.8 | 10.30 | 16.20 | 2.80 |
| Cartagena | 1172 | 71 | 39.10 | 16.20 | 14.40 | 6.0 | 10.3 | 16.20 | 19.40 | 3.80 |
| La Coruña | 930 | 72 | 34.80 | 13.80 | 9.40 | 3.6 | 11.8 | 11.30 | 14.80 | 5.00 |
| Valencia | 886 | 61 | 28.70 | 12.10 | 10.00 | 1.0 | 8.2 | 12.70 | 21.40 | 5.40 |
| The Netherlands | ||||||||||
| Zwolle | 1079 | 81 | 29.00 | 13.80 | 9.20 | 6.7 | 10.6 | 12.00 | 12.30 | 4.20 |
| Europe total, mean (95% CI) | 5063 | 71 (62.2 to 79.8) | 34.40 (33.0 to 35.6) | 15.0 (14.0 to 15.9) | 10.50 (9.7 to 11.4) | 4.70 (4.2 to 5.4) | 10.2 (9.4 to 11.0) | 12.60 (11.8 to 13.7) | 16.90 (16.0 to 18.1) | 4.10 (3.5 to 4.6) |
| Total, mean (95% CI) | 30093 | 83.2 (78.6 to 87.8) | 45.2 (44.7 to 45.8) | 20.3 (19.8 to 20.7) | 16.7 (16.3 to 17.2) | 8.5 (8.2 to 8.8) | 16.6 (16.2 to 17.1) | 21.8 (21.3 to 22.3) | 27.3 (26.7 to 27.8) | 9.3 (9.0 to 9.6) |
ED, emergency department.