Table 1 Baseline characteristics of the study population: 158 asthmatic and 50 non-asthmatic children living in Mexico City, 2003-2005
Asthmatic (n = 158) | Non-asthmatic (n = 50) | |||
|---|---|---|---|---|
Characteristics | Median § (Q25, Q75) | Median (Q25, Q75) | ||
Sex, % masculine | 61.9 | 40.0 | ||
Age, years | 9.6 | (7.9, 11.0) | 9.3 | (7.9, 11.5) |
Weight, kg | 36.0 | (27.0, 46.0) | 32.0 | (26.0, 45.0) |
Height, cm | 137.0 | (124.5, 147.0) | 134.0 | (127.0, 147.0) |
BMI, Kg/m2 | 18.9 | (16.3, 22.0) | 18.1 | (15.7, 21.5) |
Maternal education, years (mean (SD)) | 9.8 | (3.0) | 9.3 | (3.0) |
Smoking at home, % | ||||
Father | 54.8 | 45.0 | ||
Mother | 41.1 | 28.6 | ||
Other person | 23.4 | 29.1 | ||
Allergy prink test positive (Atopics) (%) | 88.8 | 80.0 | ||
Main allergens testing (%) | ||||
Cat | 28.1 | 27.3 | ||
Dog | 20.0 | 21.8 | ||
House dust mite | 61.9 | 45.4 | ||
Cockroach | 41.9 | 30.9 | ||
Asthma diagnosis, % | ||||
Moderate persistent | 17.5 | |||
Mild persistent | 26.9 | |||
Mild intermittent | 55.0 | |||
Baseline lung function and IL-8 levels | ||||
FEV1, L (mean (SD)) | 1.9 | (0.7) | 1.95 | (0.6) |
FVC, L (mean (SD)) | 2.3 | (0.8) | 2.25 | (0.7) |
IL-8, pg/ml§ | 157.2 | (78.2, 295.1) | 202.9 | (112.9, 333.6) |